7. A car, 1800kg, begins at 5m/s and accelerates up to 20m/s in 4 seconds. It then hits a wall and comes to rest in 0.4 seconds. Find a)the impulse and force on the car before it hits the wall b)the force and impulse on the car after it hits the wall
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Ответ:
If anyone can help, this is the translation.
Translation: because the water must be in jet