Asked by Mary
A ball of mass 0.05 moving at 10m per seconds collides with another ball of equal mass at rest if two balls move off together after the impact calculate the common velocity
Answers
Answered by
Arora
m1 = mass of ball 1 = 0.05kg
m2 = mass of ball 2 = 0.05kg
u = Initial velocity = 10m/s
v = Final velocity
Use the conservation of momentum:
Initial momentum = Final momentum
=> m1*u = (m1+m2)*v
=> 0.05*10 = (0.05+0.05)v
=> 0.5 = 0.1v
=> v = 5m/s
m2 = mass of ball 2 = 0.05kg
u = Initial velocity = 10m/s
v = Final velocity
Use the conservation of momentum:
Initial momentum = Final momentum
=> m1*u = (m1+m2)*v
=> 0.05*10 = (0.05+0.05)v
=> 0.5 = 0.1v
=> v = 5m/s
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