Answer to Question #36812 in Mechanics | Relativity for jgirl

Question #36812
3)A car is moving on a horizontal road at 36 km/hr. The driver ,of mass 50 kg stops the car by applying the brakes thus,locking the wheels.
a)Draw a free body diag of the driver while decelerating
b)If the car stops at 10m what force is applied by the car on the driver?
c)Instead of applying brakes,the driver drives the car into a parked bus.The front of the car crumples and the body of the driver is stooped at a distance of 1m. What average force is exerted on him due to the collision?
d)In what case are the bones more likely to break?b or in c?
e)Is it safer for him to be in a rigid car that doesn't crumble at all,or in a car whose front part cumbles upon colliding at a distance of about 1m?
f)Can you explain why modent cars have collapsible steering wheels (they collapse upon receiving a strong blow to the front)
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