A 6 kg-object moving in the + x-direction at 6.5 m/s strikes an obstacle and reb

Question

A 6 kg-object moving in the + x-direction at 6.5 m/s strikes an obstacle and rebounds moving in the - x direction at 4 m/s. Calculate (a) the impulse imparted to the object and (b) the average force exerted on the object by the obstacle, if the impact lasted 25 ms. A 6 kg-object moving in the + x-direction at 6.5 m/s strikes an obstacle and rebounds moving in the - x direction at 4 m/s. Calculate (a) the impulse imparted to the object and (b) the average force exerted on the object by the obstacle, if the impact lasted 25 ms.

Explanation / Answer

impulse imparted=change in momentum

             =(6*6.5-(6*(-4))

          =63kgm/s

2)force=dp/dt = 63/0.025=2520N

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