A car of mass 2400kg moving at 20 m/s slams into a cement wall and comes to a halt?
1 answer:
Impulse = change in momentum
The car's momentum was (mass) x (speed)
Momentum = (2400 kg) x (20 m/s)
Momentum = 48,000 km-m/s
To completely stop the car, the impulse = -48,000 km-m/s .
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