A small car makes a head-on collision with a large truck on an icy pavement. Bef

Question

A small car makes a head-on collision with a large truck on an icy pavement. Before they collide, they were traveling with the same speed (but in opposite directions). During the collision, which vehicle experiences the greater collision force? During the collision, which vehicle experiences the greater acceleration? Which vehicle had the larger change in momentum? Which vehicle had the larger change in velocity? Assuming the car driver and the truck driver have the same mass, which driver experiences the greater force during

Explanation / Answer

1.
A. The collision force would be same for both vehicles (action = reaction)
b. The car would experience greater acc, because of small mass
c. The change in momentum for both bodies would be the same
d. The car would have a larger change in velocity
e. The car has greater acc, so for same mass the car driver experiences the greater force.

2. a. change in momentum = 75*10 = 750 kgm/s
b. Assuming constant a
0 = 10 - at
at = 10 -- (1)
2*a*(1) = 100
a = 50 m/s/s
so t = 0.2 s

c. Avg force = 75*50 = 3750N
d. s = 0.5cm
2*a*0.5*10^-2 = 100
a = 10,000 Mm/s/s favg = 750kN

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