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A toy car having mass m = 1.20 kg collides inelastically with a toy train of...

A toy car having mass

m = 1.20 kg

collides inelastically with a toy train of mass

M = 3.95 kg.

Before the collision, the toy train is moving in the positive x-direction with a velocity of

Vi = 2.40 m/s

and the toy car is also moving in the positive x-direction with a velocity of

vi = 4.55 m/s.

Immediately after the collision, the toy car is observed moving in the positive x-direction with a velocity of 2.15 m/s.

Determine the change ΔKE  in the total kinetic energy. Assume friction and the rotation of the wheels are not important so that they do not affect ΔKE.

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