An athlete is training on a 100 m long linear track. His motion is described by the graph of his position vs. time, below. For each segment of the graph, find the magnitude and direction of the athlete's velocity.   magnitude vA _______ m/s   direction vA(Pick from the following choices) - Positive x - Negative x - The magnitude is zero   magnitude vB _______ m/s   direction vB(Pick from the following choices) - Positive x - Negative x - The magnitude is zero   magnitude vC _______ m/s   direction vC(Pick from the following choices) - Positive x - Negative x - The magnitude is zero magnitude vD _______ m/s   direction vD(Pick from the following choices) - Positive x - Negative x - The magnitude is zero

Cheryl runs a race on a circular 400.0 m track. She starts running east at the starting line and stops 20.0 m west of the starting line. Her time is 80 s. What is her average speed?

The velocity of a particle as a function of time is given by the graph below: velocity vs time 20 15 10 8 9 10 -5 -10 -15 -20 time (s) Part A The displacement of the particle would best be approximated as -5 m O -20 m O 20 m 95 m (s/w) Aapojan

Two kids are racing towards a toy somewhere between them. Albert has 3.90 times further to run than Betty. Albert is to the West of the toy and Betty is to the East of the toy. Albert runs at a constant speed of 1.60 m/s. It takes him 2.90 s to reach the toy.How far did Albert run to reach the toy?

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Based on the diagram below, what is the initial velocity of the object if it takes 6.177s for the object to start at position A and then go to B if it experiences a constant acceleration of 13.29m/s2. The velocity at B is shown below. Everything in this problem is happening horizontally.

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K Solve for the indicated variable. Assume all variables are positive. QV₁ QV₂ T. L T₂ ; for T₁ (Simplify your answer.)

Please answer question number 4 and 8

A group of students in a science class monitored the movement of a cat walking along with a straight line and recorded the cat's position in five-second intervals.The results are summarized it in the table below.  time and position time(s) position (cm) 0 49.0 5 38.0 10 43.0 15 40.0 20 60.0   A. What is the displacement of the cat between t = 5.00 s and t = 20.0 s?   B. What is the average velocity of the cat between t = 5.00 s and t = 20.0 s?   C.What is the distance the cat traveled between t = 5.00 s and t = 20.0 s?