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anonymous
 one year ago
A student throws a ball with a speed v=15m/s at the rear of the receding truck traveling 7m/s. If the collision is elastic and perpendicular to the surface of the truck , what will be the rebound velocity of the ball?
answer is 1m/s but i don't know how to calculate it
anonymous
 one year ago
A student throws a ball with a speed v=15m/s at the rear of the receding truck traveling 7m/s. If the collision is elastic and perpendicular to the surface of the truck , what will be the rebound velocity of the ball? answer is 1m/s but i don't know how to calculate it

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0@Michele_Laino help please

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.0hint: since the collision is elastic, then the total kinetic energy is conserved, and the total momentum is also conserved

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what would be the formula we will use?
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