A B C D 14. A steel ball is dropped from a diving platform (withan initial velocity of zero). Using the approximate value of g = 10m/s^2, what is its velocity 2.4 seconds after its release? a) 10,b) 2.4, c) 24, d) 4.2
A B C D 15. A large rock is dropped from the top of a highcliff. Assuming that air resistance can be ignored and that theacceleration has the constant value of 10 m/s^2. how fast would therock be traveling 8 seconds after it is dropped in m/s? a) 40, b)1.25, c) 18, d) 2.
A B C D 16. A ball is dropped from a high building. Using theapproximate value of g = 10 m/s^2. find the change in velocitybetween the first and
fourth second of its flight in m/s. a) 30, b) 3.33, c) 13, d)40
A B C D 17. A ball is thrown upward with an initial velocity of12 m/s. Using the approximate value of g = 10 m/s^2, how high abovethe ground is the ball 2 seconds after it is thrown in meters? a)12, b) 24, c) 6, d) 4.
A B C D 18. Suppose that the gravitational acceleration on acertain planet is only 3.0 m/s^2. A space explorer standing on thisplanet throws a ball straight upward with an initial velocity of 18m/s. How much time in seconds elapses before the ball reaches thehigh point in its flight? a) 3, b) 6, c) 18, d) 54.
A B C D 19. A ball rolls off a shelf with a horizontal velocityof 5 m/s. At what horizontal distance in meters from the shelf doesthe ball land if it takes 0.4 s to reach the floor? a) 5.4, b) 2,c) 4.6, d) 1.25.
