A large body of mass 100 kg moving with a velocity of 10.0 m/s collides elastically with a small body of mass 100 g at rest. The velocity of the small body is

5 m/s

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10 m/s

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25 m/s

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20 m/s

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Solution

The correct option is D
20 m/s

$V_{2} = (\frac{2 m_{1}}{m_{1} + m_{2}}) u_{1} + (\frac{m_{2} - m_{1}}{m_{1} + m_{2}}) u_{2} ≅ 2 \times 10 m / s = 20 m / s$

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A large body of mass 100 kg moving with a velocity of 10.0 m/s collides elastically with a small body of mass 100 g at rest. The velocity of the small body is

The correct option is D 20 m/s V2=(2m1m1+m2)u1+(m2−m1m1+m2)u2≅2×10 m/s=20 m/s

The correct option is D
20 m/s

$V_{2} = (\frac{2 m_{1}}{m_{1} + m_{2}}) u_{1} + (\frac{m_{2} - m_{1}}{m_{1} + m_{2}}) u_{2} ≅ 2 \times 10 m / s = 20 m / s$