A sphere of mass 100 kg moving at 10 m/s overtakes and collides with another sphere of mass 50 kg moving at 3 m/s in the same direction. If the impact is inelastic the velocity of of two masses after impact will be
A)8.33 m/s
B)4.17 m/s
C)Zero
D)13.3 m/s
E)6.67 m/s

Question

Quizplus · Accepted Answer

Explanation:Momentum before impact = (100 * 10) + (50 * 3) = 1300 kg m/sMomentum after impact = (100 + 50) * v = 150 * vBy the law of conservation of momentum,1300 = 150 * vv = 1300/150 = 8.33 m/s

A Sphere of Mass 100 Kg Moving at 10 M/s