Question

A particle a of mass mA is attached by a compressed spring to the particle b of mass 2mA, if the energy stored in the spring is 60 J, what kinetic energy will each particle acquire after releasing them? A 1500 kg car collides with a wall. The initial velocity Vi = - 15i m/s. The final velocity VF = - 15 m/s. If the shock lasts 0.15 sec. Find the impulse due to it and the average force exerted on the car?

Answer 1

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