A tractor of mass 5.0kg is used to tow a car of mass 2.5kg. Tge...

A tractor of mass 5.0kg is used to tow a car of mass 2.5kg. Tge tractor moved with a speed of 3.0m/s just before the towing rope became taut.
Find
1. Speed of the tractor when the rope became taut
2. Lost kinetic energy of the system just after the car started moving
3. Impulse in the room when it jerks the car into motion?

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