Question 1 2 pts A pendulum with a mass of 55kg reaches a maximum height of 2.8m. What is its velocity at the bottommost point in its path? 0 7.4 m/s 0 5.3 m/s 0 55.5 m/s 0 10.6 m/s Question 2 2 pts A ball with mass of 5kg is dropped from the top of a building this is 30m high. What is the approximate velocity of the ball when it is 10m above the ground? 0 10 m/s O 20 m/s 0 24 m/s 0 -10 m/s Question 3 1 pts How would the final velocity in Question #2 change if the mass was increased to 100 kg? O The velocity would decrease O The velocity would increase O No change in final velocity Question 4 6 pts Consider problem #24 from your homework about the skier. (a) Remove the frictional force between the skis and the snow. Find her new final velocity. (b) Based off of your answer from (a) how large of role did friction play when it was incorporated in the problem initially? (c) Choose a different surface interaction for this problem. (See Table 5.1 from section 5.1 Friction in your text). Using a different surface interaction and kinetic friction coefficient recalculate her final velocity.