Author Question: A ball is pushed downhill with an initial velocity of 3.0 m/s. The ball rolls down a hill with a ... (Read 140 times)

CharlieWard · **on:** Jul 28, 2018

A ball is pushed downhill with an initial velocity of 3.0 m/s. The ball rolls down a hill with a constant acceleration of 1.6 m/s2 . The ball reaches the bottom of the hill in 6.0 s. What is the ball's velocity at the bottom of the hill?
a. 10 m/s
c. 16 m/s
b. 13 m/s
d. 17 m/s

Question 2

A strobe photograph of a car moving along a straight road shows the interval between each successive image to be diminishing. If the direction of motion of the car is taken as positive, which of the following are negative?
a. the speed of the car
c. the average acceleration of the car
b. the average velocity of the car
d. all of the above