Question

A particle of rest mass m and speed v collides and

sticks to the stationary particle of mass M. What is

the final speed of the composite particle?​

Answer 1

Answer:

Mass of first body=m=m¹

Initial velocity of first object=v=u¹

mass of second object=M=m²

initial velocity of second object=u²=0(because object is at rest)

After collision

Final mass=m¹+m²=m

Final velocity=v

Second law of motion:-

m¹u¹+m²u²=mv

m¹u¹=mv ...(u²=0)

Final speed = v =u¹

The final speed of composite particle = v=u¹ which is the speed of first particle.

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