Tennis Definition and 201 Threads

Homework Statement A tennis ball is dropped from a point 4.9 m above the ground. Every time it hits the ground, it bounces back to ¾ of its previous height. How long will the ball take to come to at rest? [ignore the time required for hitting the ground and turning back] Homework...

Homework Statement [/B] A tennis player strikes an incoming tennis ball of mass m and speed v such that the ball leaves the racket at speed v as well. How much work was done by the tennis player to reverse the direction of the ball? Explain. Did the tennis player do any negative work? Homework...

This is a multiple choice question. The de Broglie wavelength of a moving tennis ball is calculated as 1x10^-33. This means that the moving tennis ball A)Diffracts through a narrow slit. B)Does not behave as a particle C)Does not display wave properties D)Is traveling at the speed of light The...

I joined the forum to hope for an answer to a question that has been bugging me for a while. If I hit a tennis ball in a vacuum with no other forces acting upon it and another chap hits a ball from the other end of the court - at the moment the balls cross if you could freeze time what...

Hey all, I need to build a launcher that is capable of throwing a tennis ball over a 1 meter high wall and hit a target 2 meters away. I realize there are some threads already discussing this, but my question is more based on the type of launcher. Would a trebuchet or a spring powered cannon be...

Homework Statement Title might be unclear since I had little space to explain. I'll state my problem from the beginning: I don't know how to determine one of the constants in formula for the velocity (the maximum velocity on the y-axis to be precise). I need that constant because I want to...

Homework Statement During a tennis volley, a ball that arrives at a player at 40 m/s is struck by the racquet and returned at 40 m/s. The other player, realizing that the ball is out of bounds, catches it in her hand. Assuming the time interval of contact is the same in both cases, compare the...

Homework Statement Here is the question I'm trying to answer: A tennis player hits a 1.45 kg tennis ball with a racket of mass 2.5 kg. If he hits the ball with a velocity of 7.5 m/s and then stops, what impulse did he imply on the ball? What is the ball’s velocity? Homework Equations...

Homework Statement Homework Equations Tangential v = wr The Attempt at a Solution I first drew a force diagram for when the ball contacts the floor. Topspin means the ball is moving tangentially backward. Therefore, the bottom moves at v - wR. Friction works opposite in the...

Introduction: This isn't really a homework question in that I recently came across Feynman's original problem sets that had accompanied his famous lectures of 1960 and decided to solve them (and I've been doing rather badly). But at some point, I figured it would fall into this category best...

Homework Statement 1. Consider tennis net which is 2 ft high at its center point; the service line is 20 ft from the net, and the baseline is 30 ft from the net. You have a bullet-like service that travels in a straight line, just clearing the net before hitting the service line. a) What...

Homework Statement Attached. The Attempt at a Solution I've attached it. I'm not sure if I've gone wrong somewhere; I've got an extremely high quantum number, but I guess that should be expected considering we're dealing with macroscopic objects. Could someone kindly check to see if...

Hi, so I am trying to model the path of a tennis ball when serving. I already have the model without air resistance, but now I'm getting into differential equations with the air resistance. I obtained two differential equations for acceleration that i think are correct, but I'm not sure where to...

Mechanics Problem -- tennis player hitting lob shot Homework Statement A tennis player (1) located on the line at the back of the court attempts to “lob” his competitor. The tennis player (2) stands 2 meters behind the net facing player (1) who hits the ball in 0 (origin), 9 meters away...

Homework Statement This isn't really homework, just reviewing for a test. This is problem 3.17 in 'A modern introduction to probability and statistics: understanding why and how' Dekking. But since it can be seen as a HW problem, might as well post here. Question: You and I play a...

Hello! I'm hoping someone or group of someones can help me with something I'm stuck on, having to do with the Michelson Morley Experiment (MME for short if that's okay). I want to say that I'm learning Relativity and I'm getting it, as long as I accept the Given that the speed of light will...

1. How to get x,y positions for a tennis ball at each time t given total force exerted?2. We consider Drag force D, Lift Force L and Gravitation force W D=1/2*(0.55+1/((22.5+4.2*(v/(w*R))^2.5)^0.4))*pi*R^2*d*v^2 L=1/2*(1/(2+(v/(w*R))))*pi*R^2*d*v^2 W=m*g as described in...

Homework Statement A tennis ball is thrown upward with and reaches height of 18 m. What maximum height can reach this ball on the where acceleration of free fall is 6 times less than g? In both cases initial velocity is same. [sic] (excuse my physics teacher's grammar, don't shoot the...

Hello everyone, Using what little knowledge I have of physics, I guess that when a tennis ball is given a topspin, the velocity of the ball relative to the air is higher on the top than on the bottom of the ball. If Bernoulli's principle is applicable here, then the pressure should be higher on...

Homework Statement Under which class of materials would the following materials be categorized? What are/is the primary bond type(s) in each material/object? a. Tennis Ball Homework Equations The Attempt at a Solution We'll consider a very simple and standard tennis ball...

Homework Statement A tennis player hits a ball horizontally towards a net of height 0.90 meters, at an initial speed of 25m/s. The ball is hit at a height of 2.5 meters above the ground and at a horizontal distance of 15 meters from the net. Ignore the effects of air resistance and spin (a)...

Hello. I'am a scientific student in Paris / France. I am doing a small research about the importance of the swingweight (= Moment Of Inertia) of tennis rackets with 3 goals : . to define a calculation model to simulate the swingweight and to calculate the impact of adding small weights (lead) on...

Homework Statement If you toss a tennis ball straight upward, shouldn't there be in horizontal motion of the ball? The question says a bus is traveling north, u toss a ball directly upward, will it collide with the thrower. The answer says : The ball is in motion horizontally and that...

Homework Statement I'm building a tennis ball launcher (as most people did) and I barely have some calculations done. I already have a measurement for my project (i.e. an angle and such), a k value for my string and a distance that it should travel horizontally. Theoretically, I'm supposed to...

Homework Statement 9.6 A table-tennis ball is thrown at a stationary bowling ball. The table-tennis ball makes a one-dimensional elastic collision and bounces back along the same line. Compared with the bowling ball after the collision, does the table-tennis ball have (a) a larger...

Homework Statement A tennis racket (950 g) hits a tennis ball (110 g) with a force of 5000 N. What is the acceleration of the tennis ball? During the collision, with what force does the tennis ball hit the tennis racket? What is the acceleration of the tennis racket? (Remember that force...

Homework Statement Using the formulae for potential energy and kinetic energy, find the speed that a tennis ball hits the ground when dropped from a height of 20m. With reference to the principle of conservation of energy, explain why you could use these equations and what assumptions you...

Hi ! I am working on the modelling of the Table Tennis game. Can I calculate the Spin of the Ball after hitting without using any camera and any vision system. I know the velocity of the ball before and after the hitting in all directions (x,y,z) and velocity of the racket as well. Is...

Homework Statement To warm up for a match, a tennis player hits the 58.0g ball vertically with her racket. If the ball is stationary just before it is hit and goes 5.50m high, what impulse did she impart to it? I know that the answer is 0.602 kgm/s but I don't understand why this is the answer...

Hi ! I am working on a table tennis playing robot. The picture of the robot is attached. I have few questions. 1) Can I consider the collision between Ball and the plate as the two dimensional collision ? ? (At this time I am not considering z-axis) 2) If I am considering the...

This seems like such a pathetically elementary problem, and I feel like a total moron right now. Well, here it is: When a 58 gram tennis ball is served, it accelerates from rest to a speed of 45 m/s. The impact of the racket gives the ball a constant acceleration over a distance of 44 cm...

Hi i want to work on robotic table tennis player. So i am confuse that which kind of motors should i use. I need high response motors.

A .065-kg tennis ball moving to the right with a speed of 15 m/s is stuck by a tennis racket, causing it to move to the left with a speed of 15 m/s. If the ball remains in contact with the racket for 0.020s, what is the magnitude of the average force experienced by the ball? F=mv/t I think...

Homework Statement A tennis ball of mass = 0.060 kg and speed = 26 m/s strikes a wall at a 45° angle and rebounds with the same speed at 45° . Homework Equations Δp = pfinal - pinitial horizontal velocity = (26 m/s)cos 45° There's a picture if you all care. The Attempt at a...

Hi everyone, Can anyone tell me what information I'd need to calculate the maximum and minimum bounce angle of a tennis ball being fired at a tennis court? The ball is being fired at 30 m/s at an angle of 16° and the coefficient of restitution of the tennis ball is 0.759. What other...

Homework Statement A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. (a) what is the acceleration of the ball while it is in flight? (b) what is the velocity of the ball when it reaches its maximum height? Find (c)...

Any tennis players here? I'm in South Florida ... Fort Lauderdale. 64 years old, good strokes, and pretty good shape. Let me know if you want to play. I don't care about winning or losing, but I'm so good that I usually win. Check out the video. And, yes, I speeded it up, but my serve is...

Homework Statement A tennis ball of mass 0.022 kg is moving at 3.1 m/s at an angle of 222° to the horizontal. It is struck by a racket which exerts a force on it of 72t - 442 t^2 N for 1/10 of a second at an angle 32° to the horizontal. Find the final velocity of the tennis ball (Express...

Homework Statement Ok, for my Mechanical engineering class we have been assigned to make a 2ft ^3 5kg device that will launch a tennis ball 20-40 ft. My group decided to use a design more or less like a crossbow, so I was hoping someone would look over my calculations and make sure they're...

Homework Statement two students throw identical tennis balls towards a building at the same speed. one ball strikes the wall, bouncing back at half its original speed. the other ball smashes a window and continues in the same direction at half its original speed. did the two tennis balls...

Hi, I came across this question which i couldn't figure out why the kinetic energy of the table-tennis ball is greater than the bowling ball after collision. Qn: A table-tennis ball is thrown at a stationary bowling ball. The table-tennis ball makes a one-dimensional elastic collision and...

Homework Statement You drop a tennis ball from 4.36 m. It rebounds to height of 2.45m. If the ball is in contact with the floor for 10.0 ms, what is its average acceleration during that contact? Homework Equations we know initial height to be 4.36 m acceleration due to gravity to be...

If anyone here has ever caught a few tennis matches, especially with that stupid Sharapova chick, do you agree that the grunting is just TOO MUCH?? https://www.youtube.com/watch?v=2LawWhZcmV0 My dad is SO happy whenever she is eliminated from a tournament. What the hell is her problem?? And...

Can a tennis ball move faster immediately after it strikes the court than immediately before is the question Thoughts ? If you throw the ball up in the air with no forward velocity but significant spin, it will move once it rebounds. Seems to me that that, added to whatever velocity the ball...

I'm designing a tennis ball launcher using compressed air that will hopefully be able to hit a target at some distance away. We won't know the exact distance until the day of the competition, but I was curious if there was some relatively simple equation relating the pressure of the compressed...

Hey guys, this is just a problem I have been playing around with in my spare time, but it occurs to me that someone might have been working on this before. So I figured I'd ask the wonderful people here for help. The problem is: Assume that the probability of player A winning a point is p and...

Homework Statement A tennis player serves in a match.He hits the tennis ball so that it flies off the racket with a velocity of 50m/s at 10° to the horizontal. Sx=11m Sy=2.4 - 1.07 = 1.33m ux=50cos10° uy=50sin10° time=? a)Show that the ball cannot pass over the net. b)The player serves...

Hey All I'm going to implement a tennis net for a video game. I already have the animation of the net in place (I think) through cloth simulation. What's missing is a physics simulation of the collision between the ball and the net? I think the net could be modeled as an elastic rectangular...

A tennis ball is thrown perpendicularly to the wall. The ball collides with the wall at p momentum. If its collision is partially elastic where e= 0.5, then its change of momentum is e= 0.5 which its a partly elastic collision how do we determine the change of momentum? does it...

Homework Statement A player stands with his feet at the point O and serves the ball from a point Y at a height of 2.4000m vertically above O. Assume that the ball then travels in a straight line directly over the net at the midpoint A, which is at a height of 0.9144 m, before bouncing at...