A 500-N the parachutist open his chute and experiences an resistance force 8000

Question

A 500-N the parachutist open his chute and experiences an resistance force 8000 N. The net force on the parachutist is then A) 500 N downward. B) 800 downward C) 500 N upward D) 300 N upward. E) 300 N downward. A golf ball is thrown at bounces backward from a massive bowling ball that is initially at rest. After the collision compared to gold ball, the bowling ball has more A) momentum the and more kinetic energy B) kinetic energy but less momentum C) momentum, but less kinetic energy D) need (forward the pole) A block of ice sliding down an incline has half in maximum kinetic energy A) at the bottom. B) halfway down C) at the top, D) need more information When you drop a rubber ball on the floor it bounce back. The force on the ball to produce A) ball B) four C) need more information

Explanation / Answer

9. Fnet = Fb - mg = 0

= 800 - 500

= 300 N upward

Ans(D)

10. (C) momentum but less kinetic energy.

11. (B) toward the equator

12. it will be between halfway and top.

13. (B) floor

14. (a) zero

15. 2 pi r = 2

r = 1 / pi

w = 1 rev /s = 2pi rad/s

v = w r = (2 pi ) (1/pi) = 2 m/s

Ans(C)

16. (A) not vertical.

17. (B) equal to the speed fo falling drops

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