d. 2495 ) 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to

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D 2495 13 A Child Bounces A 52 G Superball On The Sidewalk The Velocity Of The Superball Is From 24 M S Downward To 1 (40.05 KiB) Viewed 41 times

d. 2495 ) 13. A child bounces a 52 g superball on the sidewalk. The velocity of the superball is from 24 m/s downward to 15 m/s upward. If the time contact with the sidewalk is 1.25 ms, what is the magnitude of the average force exerted on the superball on the sidewalk? a. 1622.4 N b. 1398.4 N C. 1248 N d. 374.4 N 14. A 2.33 kg mass with an initial velocity of 7.36 m/s in the positive x direction collides with and stick to a 1.37 kg mass with an initial velocity 4.8 m/s in the positive y direction. What is the final speed of the composite mass? a. 2.41 m/s b, 3.37 m/s c. 4.07 m/s d. 4.96 m/s 15. The mass of a hypothetical planet is 1/2 that of the Earth and its radius is twice that of Earth. If a man weighs 800 N on Earth, what would the weigh on this planet? b. 100.0 N a. 200.0N C. 400 N d. 800.0 N 16. A 1.8 kg bowling ball of radius 0.34 m starts from rest and rolls down from the top of a hill that is 18.0 m high. What is the translation speed of the tire when it reaches the bottom of the hill? Assume that the tire is a hoop with / 2/5mr? The acceleration of gravity is 9.81 m/s! b. 13.3 m/s d.18.8 m/s a. 15.9 m/s C. 16.9 m/s