A body of mass 2 kg moving with uniform velocity of 40 m/s collides with another body at rest. If the two bodies move together with a velocity of 25 m/s. Then the mass of the other body is
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A body of mass 2 kg moving with uniform velocity of 40 m/s collides with another body at rest. If the two bodies move together with a velocity of 25 m/s. Then the mass of the other body is
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Answer:
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Answer:
Mass of the other body=1.2 kg
Explanation:
m1=2kg, u1=40m/s, u2=0, v1=25m/s, v2=25m/s
Let the mass of other body, m2 be x.
Initial Momentum=Final Momentum
m1u1+m2u2=m1v1+m2v2
2×40+x×0=2×25+x×25
80=50+25x
25x=80-50
25x=30
x=30/25
x=1.2 kg
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