A body of mass 10kg moving with speed 3m/s collides with another stationary body of mass 5kg. As a result the two bodies stick together. The KE of composite mass will be
Akanksha , 7 Years ago
Grade 11
1 Answers
Sam
Last Activity: 7 Years ago
first we will conserve momentum
10 x 3 = (10+5) x V
where V is the velocity of the composite mass
on solving we get v = 2 m/s
so KE = mv2 = (10+5).(2)2 = (15).(4) = 30 kg m2/sec2
2 2 2
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