Physlets+Exercise+2.2

Physlets Exercise 2.2

a. The ball is traveling at aproximately 2.5 meters per second for 0.8 seconds. Then the balls's speed doubles to approximately 5 meters per second and travels that speed for 0.7 seconds.

b. The correct position vs time graph for the animation is graph A. It cannot be graph B because graph B shows that the ball slows down when it clearly speeds up. It cannot be graph C because graph C shows that the ball travels at a constant speed but jumps positions at 0.8 seconds which the ball clearly does not do.

c. The correct velocity vs time graph for the animation is graph D. It cannot be graph E because graph E shows that the velocity is constantly increasing when the ball is moving at a constant speed and the velocity is not increasing at all. It cannot be graph F because graph F shows that the ball's velocity is contantly increasing after 0.8 seconds pass, but the ball instantly increases speed and then travels at a constant velocity just as it did at the beginning of the animation.