A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

Question

Physics

Jonathon Ellis

20 September, 13:10

A 2000 kg truck is at rest at a stop sign. A 1100kg car collides head-on with the truck. The car was moving at 15.0m/s before the collision if the collision was completely inelastic, what is the velocity of the car and the truck after the collision?

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Sydney Wagner · Answer 1

It's very simple You know linear momentum must be conserved. Initial momentum of truck = 0 Initial momentum of car = 1100x150 kgm/s Collision is inelastic so final velocity will be same for both of them. Final momentum = mass of car+mass of truck) x final velocity. Now according to linear momentum conservation, Pink = Pf solve this to get velocity