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Ch02 - Chapter 2 Motion in One Dimension CHAPTER 2 1 A ball...

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Chapter 2, Motion in One Dimension C HAPTER 2 1. A ball is pushed with an initial velocity of 4.0 m/s. The ball rolls down a hill with a constant acceleration of 1.6 m/s 2 . The ball reaches the bottom of the hill in 8.0 s. What is the ball’s velocity at the bottom of the hill? a. 10 m/s b. 12 m/s c. 16 m/s d. 17 m/s 2. A cart is given an initial velocity of 5.0 m/s and experiences a constant acceleration of 2.0 m/s 2 . What is the magnitude of the cart’s displacement during the first 6.0 s of its motion? a. 10 m b. 55 m c. 66 m d. 80 m 3. A rock is thrown straight down with an initial velocity of 14.5 m/s from a cliff. What is the rock’s displacement after 2.0 s? (Acceleration due to gravity is 9.80 m/s 2 .) a. 28 m b. 49 m c. 55 m d. 64 m 4. A rock is thrown straight up with an initial velocity of 24.5 m/s.What maximum height will the rock reach before starting to fall downward? (Take acceleration due to gravity as 9.80 m/s 2 . ) a. 9.80 m b. 19.6 m c. 24.5 m d. 30.6 m 5. A rock is thrown straight up with an initial velocity of 19.6 m/s. What time interval elapses between the rock’s being thrown and its return to the original launch point? (Acceleration due to gravity is 9.80 m/s 2 .) 9
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Chapter 2, Motion in One Dimension
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