Question

13. At the low point in its swing, a pendulum bob with a mass of 0.2 kg has
     a velocity of 6 m/s.
     Ignoring air resistance, how high will the bob swing above the low point before reversing      direction?






14. A sled and rider with a combined mass of 60 kg are at the top of a hill a height of 15 m above the level ground below. The sled is given a push providing an initial kinetic energy at the top of the hill of 1600 J.
           If friction can be ignored, what will be the kinetic energy of the sled and rider at the bottom of the hill?











15. A 0.15 kg ball traveling with a speed of 40 m/s is brought to rest in a catcher's mitt. What is the size of the impulse exerted by the mitt on the ball?

Answer 1