# Velocity in Collisions

True or False: In a collision between a small car and a large truck, the car and the truck undergo the same change in velocities.

False- mor mass more change in velocity

right??

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Shooting Star
Homework Helper
You have not explained how you got that. But do you remember conservation of linear momentum?

well the massive truck will have more of a change in velocity than the small car since more mass means more change in velocity.

Right???

tiny-tim
Homework Helper
mor mass more change in velocity
erm … if a 100 ton truck at 50 mph hits a roller-skate at 0 mph, which changes speed more?

right
so the car and truck do not change velocities at the same rate, which makes the origional statement false.

tiny-tim
Homework Helper
So is it still "more mass more change in velocity"?

no the less massive object will have a more change of a velocity due to the more massive object. But the origonal statement is still false, right??

tiny-tim