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A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms–1 with respect to the man. The speed of the man with respect to the surface is :

a)

0.20 ms−1

b)

0.14 ms−1

c)

0.47 ms−1

d)

0.28 ms−1


Question ID - 51486 | Toppr Answer

A man (mass = 50 kg) and his son (mass = 20 kg) are standing on a frictionless surface facing each other. The man pushes his son so that he starts moving at a speed of 0.70 ms–1 with respect to the man. The speed of the man with respect to the surface is :

a)

0.20 ms−1

b)

0.14 ms−1

c)

0.47 ms−1

d)

0.28 ms−1

1 Answer - 5876 Votes

3537

Answer Key : (a) -

 50 V1 = 20 V2

V1 + V2 = 0.70

V1 = 0.20



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