Question
Physics Question on laws of motion
A man weighing 70 kg is riding on a cart of mass 30 kg which moves along a level floor at a speed of 3 ms-1. If he runs on the cart so that his velocity relative to the cart is 4ms-1 in the direction opposite to the motion of the cart, the speed of centre of mass of the system is
A
0.3ms-1
B
0.5ms-1
C
0.2ms-1
D
0.1ms-1
E
zero
Answer
0.2ms-1
Explanation
Solution
The correct option is (C) : 0.2ms-1