Q1. A motorist travelling with constant velocity of 15 m/s (about 34 mph) passes a school crossing corner, where the speed limit is 10 m/s (about 22 mph). Just as the motorist passes, a police officer on a motorcycle stopped at the corner starts off in pursuit with constant acceleration of 3.0 m/s
(a) How much time elapses before the police catches the motorist?
(b) What is the officer's speed at that point?
(c) What is the total distance each vehicle has travelled at that point?
Q2. Assume a slide similar to Der Stuka is 35.6 meters high, but is a straight slope, inclined at 45° with respect to horizontal.
(a) Find out the speed of a 56.7 kg thrill seeker at the bottom of the slide, assume no friction.
(b) If the thrill seeker has a speed of 24.1 m/s at the bottom, find out the change in mechanical energy due to friction.
(c) Find out the magnitude of the force of friction, assumed constant.