Average velocity Definition and 283 Threads

I'm having trouble solving part of this problem. Can anyone help? In climbing a wall, a caterpillar undergoes a complicated motion in which it ascends 3m and slips down 2m every 5min. What is its average speed and average velocity after 5min? I figured the avg. speed to be 0.02 m/s, but...

Hi guys, I just started taking physics 2 days ago at my school. One of our questions is: "You drive a car 2.0 hours at 40km/h, then 2.0 hours at 60 km/h What is your average velocity?" Ok, from what I understand, Average Velocity is: delta v = delta distance / delta time So, To find...

I have a homework question which I would like to try to explain more mathematically. If the average velocity of an object is zero in some time interval, what can we say about the displacement of the object for that interval? Thinking about it graphically, I realize it must be zero. Could...

A boy with a weight of 70 kg jumps down from a 3 meter high tree. His velocity on impact I have found to be 7,68 m/s and the impulse is 536,7kg*m/s. Now I need to find the average velocity during impact. What formula do I have to use?

I had a physics problem which I had some problem understanding. The problem is: You plan a trip on which you want to average 90km/h. You cover the first half of the distance at an average speed of only 48km/h. What must your average speed be in the second half of the trip to meet your...

if I was given a graph, and told to work out the instant and average velocity, do I just find the slope of a tangent for both instant and average velocity? thx~

Can I use integration to show why car 2 traveled farther than car 1 over a given time interval? Here is some of the problem, I have the following graph of two different velocity functions for two cars. http://img97.imageshack.us/img97/5696/graph1kv.jpg" The viewing window of this graph is...

I have no idea why I'm taking physics when I really have no wish to take another math/science class, but I am. The only problem is I have no idea what I'm doing, and we're just learning very basic physics right now. Ok, so now for my problem on motion (which is basically just a need for...

my professor gave us these two problems to try. I just started this physics class and am a little lost on these problems. any help/ hints would be greatly appreciated. 1) A particle moves along the x-axis according to the equation, x(t)=50t + 10t^2(squared)...

A rocket carrying a satelite is accelerating straight up from the Earth's surface. The rocket clears the top of its launch platform, 47 m above the ground, 1.35 seconds after lift off. After an additional 4.45 seconds it is 1.00 km above the ground. Calculate the magnitude of the average...

Average speed and average velocity?? Hello Dose a particle having a uniform circular motion may have some average velocity, although it is accelerating?? And how to find it? If yes, it has some average velocity then, what's its relation with average speed? "IAM CONFUSED THAT...

If an arrow is shot upward on the moon with a velocity of , its height in meters after seconds is given by . (a) Find the average velocity over the given time intervals. Do not round off your answers. t=[1,2],[1,1.5],[1,1.1],[1,1.01],[1,1.001]

Does anyone know how to do this? Thanks!

I am having a problem with the following question: A spider crawls from corner A to corner B in 30 minutes. The distance between AC (C chosen as a half-way point) is 27 meters, the spider turns right and the distance between CB is 21 meters. a) What is its average speed? and b) what is the...

A train moving at an essentially constant speed of 60 miles/hr moves eastward for 40 min, then in a direction 45 degrees east of north for 20 min, and finally westward for 50 min. What is the average velocity of the train during this run? So average velocity is \frac{\Delta r}{\Delta t} . I...

Each second a rabbit moves half the remaining distance from his nose to a head of lettuce. Does he ever get to the lettuce? What is the limiting value of his average velocity? I don't think he ever gets to the lettuce, just very close to it. Is the limiting value of his average velocity...

hi all having a problem with this question: The position of a rabbit along a straight tunnel as a function of time is plotted: http://img284.imageshack.us/img284/5764/untitled0vz.png 1. What is its instantaneous velocity at t = 10.0s and t=30.0s 2. what is the average velocity: between t...

I am doing this question, and have collected the times and distances traveled at those various times. I am supposed to calculate the average velocity for each distance now. The book say: vav = vinst = d/t ; at t’ = t/2 (half time) But I checked online and found: vav = (d2 – d1)/(t2 –...

A spring-mass system moves according to the position function x(t)=Asint. What is the average velocty in the period 0<=t<=2s? so the velocity is v(t)=A \omega cost how would I calculate the average velocity? \frac{A \omega cost |^2_0}{2} ??

Hey, I just some clarification for kinematics: am i correct to say that: average velocity= displacement/time average speed=total distance/time ?

Larry leaves home at 9:0 3.00 and runs at constant speed to the lamp post. He reaches the lamppost at 9:0 9.00, immediately turns, and runs to the tree. Larry arrives at the tree at 9: 12.0 0. from 0-1200 yds. the lightpost is at 200, house at 600 and the tree at 1200 i keep getting...

Hi, i have a few questions about motion. any help would be much appreciated. Q1. If a car was driven 250km from home to town, and back again in 12 hours: a) what was the average velocity? b) what was the average speed? c) what was the average speed in m/s? (show working out) thats it...

Average velocity ? You're driving an interstate 10 from Sn Antonio to Houston half the time at 55km/hr and the other half at 90km/hr . What is your average speed a) from San Antonio to Houston b) from Houston back to San Antonio c) for the entire trip ? What is your average velocity for the...

How do I find the average velocity after adding two vectors?

A particle P travels with constant speed in a circle of radius 7.4 m and completes one revolution in 22.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 4.4 s and t = 18.7 s. I used T=2(pi)r / v 22 =...

I know average velocity is V = displacement/time, but how do you find this with 3 different sets of numbers?? ---- A car travels along a straight stretch of road. It proceeds for 13.9 mi at 56 mi/h, then 29 mi at 42mi/h, and finally 32.2 mi at 35.2 mi/h. What is the car's average velocity...

[Walker2 2.P.016.] You jog at 6.2 mi/h for 5.0 mi, then you jump into a car and drive for another 5.0 mi. With what average speed must you drive if your average speed for the entire 10.0 miles is to be 11.0 mi/h? I got 15.8, but the computer program (webassign) says that's wrong. I did...

I am having a little trouble starting this problem for physics class. Two trains, each having a speed of 30 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h flies off the front of one train when they are 60 km apart and heads directly for the other train...

Hi, this is my first post ever published on such forums... anyway i liked this forum very much especially the classic physics category... And i'll be very happy if somebody answers my question.. i read once that average velocity can be calculated by this formula ONLY when it's LINEAR: V...

In a relay race, each contestant runs a distance 24.8m while carrying an egg balanced on a spoon, turns around, and comes back to the starting point. Edith runs the first distance 24.8m in a time t1=19.3s . On the return trip she is more confident and takes only t2=time 15.1s . What is her...

I'm doing a report and i have NO IDEAH what the difference is between Average and Final velocity! I have checked every where! :eek: Please help! :confused:

Hi, I'm having trouble with two physics problems. - Ashley runs 3.0 km in 4.00 minutes. What is her average velocity? The answer is 45 but I can't figure out how to get it. - A train moving at 15 km/hr takes 1 minute to come to a stop, find its rate of acceleration, its average...

Here's the problem, While Traveling through the first half of the distance of the trip, your average velocity is 14.0 m/s. What average velocity would you need during the second half of the distance on your trip, if you wanted your average velocity for the entire trip to be 24.0 m/s...