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 |
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 |