Impulse Definition and 935 Threads

Homework Statement given mass of bullet and box and given initial and final velocity of projectile, find kinetic friction coefficient Homework Equations G1 + integral of sum force respect to time = G2 The Attempt at a Solution I setup like this... mv(projectile) + mv(block...

Homework Statement A continuous-time system has the input/output relationship y(t) = \int_{-\infty}^{t} (t - \lambda + 2)x(\lambda) d\lambda Determine the impulse response h(t) of the system Homework Equations Convolution theorems y(t) = x(t) * h(t) Where y(t) is the output...

Homework Statement A 12 kg shell is launched at an angle of 55 degrees above horizontal with v_O = 150 m/s. When at highest point, it explodes into two fragments, M_1 with mass 9 kg and M_2 with mass 3 kg. The fragments reach the ground at the same time. The heavier fragment lands back at...

How to calculate , acceleration, force, momentum and impulse? I'm supposed to be able to calculate all of these things: velocity, acceleration, force, momentum and impulse. However, the physics course I'm taking explains it horribly! I think the formulas are: distance over time= velocity...

I am programming a simple physics simulation and have been following along with some books about the subject. Everything has gone well so far, although at the moment I'm stuck on how to calculate the impulse when two rigid bodies collide. I'll explain the algorithms that I'm using below...

Homework Statement A ball is traveling horizontally over a volleyball net when a player spikes it, driving it straight down to the ground. The ball's mass is .22kg, its speed before being hit is 6.4 m/s and its speed immediately after the spike is 21m/s. What is the magnitude of the impulse...

I need to find the Fourier Transform (FT) of: x(t)=\sum^{\infty}_{n=-\infty}((-1)^{n}\delta(t-nT)) Not really sure how to solve this problem, so any help will be appreciated. Also, if you guys know a good reference for non-uniform sampling and reconstruction, please post it.

I hope this is OK to post here. I thought it would be better here than in the math questions forum, since you are EEs, and probably have more experience dealing with things related to the delta function. Problem Let \hat{x}(t) = \sum_{k=-\infty}^{\infty}\delta(t-2k). Now let x(t) =...

Impulse Momentum Theorem! Homework Statement A student (m = 63 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.0180 s. The average force exerted on him by the ground is +16000. N, where the upward direction is taken to...

Homework Statement A uniform square board ABCD had mass 5kg and sides of length 60cm. The board is hinged at A so that it can rotate freely in a vertical plane. A light string of length 1 metre is attached to B and to a point E, 80cm above A. The bards rests in equilibrium with AB horizontal...

im reviewing for my final tomorrow, and there is a question that asks for the impulse experienced if a 70kg person lands on firm ground and stops after jumping from a height of 5m. what equation should i use to solve this?

the ball has a mass of 300g and is traveling at 20m/s. what will be its new velocity? section is on momentum and impulse

I have a question I am looking for an asnwer: Using the impulse momentum theorum, describe how it is possible to drop an egg from a 2 story high building and not have the egg break.

Homework Statement Before a collision, a 25-kg object is moving at +12m/s. Find the impulse that acted on teh object if, after the collision, it moves at: a. 8.0m/s b.-8.0m/s Homework Equations (c)=changes in: To find impulse, we would use the F=ma, so F=m*(c)v/(c)t So, F(c)t = m(c)v...

Homework Statement The net force acting on a glider on an air track (an essentially frictionless system) varies with time as shown in the following diagram. The vertical scale is such that the space between consecutive vertical gridlines is 5.0 Newton(s). The glider has a mass of...

Homework Statement A 50. kg cart is moving across a frictionless floor at 2.0 m/s. A 70. kg boy, riding in the cart, jumps off so that he hits the floor with zero velocity. a. What impulse did the boy give to the cart? b. What was the velocity of the cart after the boy jumped...

I am in great confusion in impulse term. As Impulse is the product of force and time and it is equal to change in momentum. Does a moving object have impulse? if not then why not?

Homework Statement Heres the problem i have been given in Grade 11 Physics for homework (keep in mind that i haven't done calculus yet so don't do anything too tricky): A satellite of mass 240 kg moving in free space at a velocity of 6000m/s is struck by an unknown object which causes it to...

I am having trouble with this question, I know what I need to find, just don't know what route to take. A 53.0 g tennis ball with an initial speed of 30.5 m/s hits a wall and rebounds with the same speed. The figure below shows the force of the wall on the ball during the collision. What is...

i am working with an encoder that says its output is impulse(ttl). I'm not quite sure what this means. is it just a digital signal? how does it work? any help you can give me would be great.

Homework Statement A linear harmonic oscillator is subject to friction(stokes). The Oscillator gets an Impulse at the time t = 0 at the rest position. What is the equation of motion for the time interval 0 - t0?Homework Equations Friction force: Fr = -a * x'(t); a = constant (stokes friction)...

Can anyone help me solve these questions on momentum and impulse? Thank you! 1. A 55 kg swimmer is standing on a stationary 235 kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +5.3 m/s relative to the shore. Find the recoil velocity that the raft would...

Ok, so this problem is kind of complicated, so ask me if you need clarification. This problem deals with Impulse and Momentum. There are two balls hanging vertically from a horizontal plane. Ball A is pulled back and is set up to strike ball B. Given for ball A - mass = 1.5 kg. Height...

A 0.500-kg ball is dropped from rest at a point 1.20 m above the floor. The ball reboundes straight upward to a height of 0.700 m. What are the magnitude and direction of the impulse of the net force applied to the ball during the collision with the floor? I have been trying to solve this...

A 1550kg car, traveling with a velocity of 12m/s plows into a 1220kg stationary car. During the collision the two cars lock bumpers and then move together as a unit. (a) what is tehir common velocity just after the impact? (b) What fraction of the initial kinetic energy remains after the...

Conceptual Question If two objects have the same momentum do they necessarily have the same kinetic energy? Give your reason. I would say no basically from just looking at formulas. P=mv for momentum K.E.= 1/2mv^2 for kinetic energy

I don't know why I'm getting the wrong answer on this one. A 5.00kg ball is dropped from rest from 1.20m above the floor. The ball rebounds .700m. What are the magnitude, and direction of the impulse or the net force applied to the ball during the collision with the floor? So I started by...

say there was a rifle that pivoted about the center of its butt.. if you knew the force from the bullet, the weight of the gun and its center of mass, the distance from the center of the barrel to the center of the butt, and the distance from the center of gravity and the center of the butt...

The question is "A 2 kg block initially hangs at rest at the end of two 1-meter strings of negligible mass. A .003 kg bullet, moving horizontally with a speed of 1000 meters per second, strikes the block and becomes embedded in it. After the collision, the bullet/block combination swings upward...

I am stuck on a part of my physics hw, please help if you can "Object A has mass mA = 7 kg and initial momentum vector pA,i = < 17, -8, 0 > kg · m/s, just before it strikes object B, which has mass mB = 11 kg. Just before the collision object B has initial momentum vector pB,i = < 3, 5, 0 > kg...

if an impulse of 25 N~s results, how would one describe the change in momentum? how is that number related or indicative of the change in momentum? i could be way off. that's likely. thanks.

a good bunter pulls the bat back right as contact is made with the ball. Why is this so? 1 This action decreases the impulse of the bat on the ball 2 This action increases the impulse of the bat on the ball 3 This action increases the average force of the bat on the ball 4 This action...

Jumping onto sand vs. jumping into water results in which of the following as each substance brings you to a halt? a) The sand exerts a greater impulse than the water b) The water exerts a greater impulse than the sand c) The sand and water exert the same impulse, but the sand exerts a...

A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 degree ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. The figure shows the force during the collision. Here's what I did. Which is probably wrong for the very first part so...

Question: A 500 g cart is released from rest 1.0 m from the bottom of a frictionless, 30 degrees ramp. The cart rolls down the ramp and bounces off a rubber block at the bottom. During collision, the cart and the ramp are in contact for 0.0267 sec. The average force exerted by the ramp on the...

A baseball has mass 0.145 kg. A. If the velocity of a pitched ball has a magnitude of 45.0 m/s and the battered ball's velocity is 55.0 m/s in the opposite direction, find the magnitude of the change in momentum of the ball. delta p = m*delta v = m*(v2 -v1) = .145 kg (-55.0 m/s - 45.0...

Hi, I'm kinda lost on these 2 problems. A space probe is traveling in outer space with a momentum that has a magnitude of 7.15 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.81 x 106 N and a direction opposite to the...

HELP! Impulse Response h(t) problem Please help me solve this problem. Atleast the correct answer indication is also very much appreciated. Compute the impulse response h(t) for (dy(t))/dt -4y(t)=x(t) a. y(t) = e^4t b. y(t) = 1- e^4t c. y(t) = e^-4t d. y(t) = 1- e^-4t Compute the impulse...

A 0.14 kg baseball moves toward home plate with a velocity vi = (-37 m/s) x. After striking the bat, the ball moves vertically upward with a velocity vf = (13 m/s) y. Find the direction and magnitude of the impulse delivered to the ball by the bat. Assume that the ball and bat are in contact for...

Hello, I've been reviewing some material from my undergraduate studies. In the book "Signals and Systems" by Haykin in the first chapter he gives an example of a voltage source with the value of Vo*delta(t) applied to a series RLC circuit. Vo is some arbitrary constant and delta(t) is the...

A 300 g ball with a speed v of 6.0 m/s strikes a wall at an angle of 30 degrees, and then rebounds with the same speed and angle. It is in contact with the wall for 10 ms. (a) What is the impulse on the ball from the wall? (b) What is the average force on the wall from the wall? What...

If I'm given an object with X mass that is moving in one direction at Y velocity, then changes direction and moves at Z velocity, how do I calculate the impulse? Most equations I have are concerned with time intervals; this one is not.

Hey. I am having a little trouble understanding the concept of impulse. The textbook i am using doesn't really shed much light onto the topic. I know that impulse is equal to the change in momentum of an object, or the product of a force applied to an object and the time it is applied for...

Hey, This may seem as stupid query for you people out there, but I would like to know if somebody would be able to spare a moment or two in explaining to me what the terms: momentum impulse power mean/refer to in the study of kinematics. Thank you heaps for your kindness, time and effort...

This thread would've fitted in a lot of categories, but as it's the mathematics I can't quite grasp, I decided to fit it here. I'll be treating the discrete case, so I suppose it's precalculus maths. Anyways, I know how to compute problems with the impulse response method, but I'm kinda baffled...

can someone help? I have no isea how to do this problem. A force in the negative direction of an x-axis is applied for 21 ms to a 0.40 kg ball initially moving at 10 m/s in the positive direction of the axis. The force varies in magnitude, and the impulse has magnitude 32.4 Ns. (a) What is...

Problem: An upright rod of mass m and length L is given an impulse J at its base, 45 degrees above the horizontal, which sends the rod flying. What value should J have for the rod to land vertically again (i.e. upright on the same end at which J was applied)? I'm trying to learn from Feynman's...

I've come across the following problem: Two otherwise isolated, equal masses m are at rest and connected by a spring with constant k. An impulse is applied to one of the masses along the direction of the spring connecting them. What happens? Qualitatively, I think that the force will both...

A 56g steel ball is released from rest and falls vertically onto a steel plate. The ball strikes the plate and is in contact with it for .5 ms. The ball rebounds elastically, and returns to its original height. The time interval for a round trip is 8.00 s. In this situation, the average force...

Hi everyone, I am stuck on two fairly easy questions that I hope someone will be able to help me with. Questions: 1) How much angular impulse must be supplied by the hamstrings to bring a leg swinging at 8 rad/s to a stop, given that the leg's moment of inertia is 0.7 kg-m^2 ? my...