1. A 75 kg man is in a car travelling at 22m/s. a) Find its kinetic energy.
The car strikes a concrete wall and comes to rest after the front of the car has collapsed 1.5m.
The man is wearing a seat belt and harness. What is the average force exerted by the belt and
harness during the crash

15. one purpose of the tread pattern on a tire is to a reduce tire wear. b. reduce traction c. allow water to flow away from the tire. d. look impressive.

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Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.