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Author Question: A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant ... (Read 107 times)

nramada

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on: Jul 28, 2018
A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant acceleration of 1.7 m/s2 . The ball reaches the bottom of the hill in 7.0 s. What is the ball's velocity at the bottom of the hill?
 a. 15 m/s
  b. 13 m/s
  c. 14 m/s
  d. 16 m/s
  e. 19 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 is/are negative?
 a. the speed of the car
  b. the average velocity of the car
  c. the average acceleration of the car
  d. all of the above


jrpg123456

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Reply #1 on: Jul 28, 2018
Answer to Question 1

d

Answer to Question 2

c


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