Question

A boy of mass 40 kg jumps with a horizontal velocity of 5 ms-1 onto a stationary cart with frictionless wheels. The mass of the cart is 3 kg. What is his velocity as the cart starts moving? Assume that there is no external unbalanced force working in horizontal direction​

Answer 1

Answer:

Given : m girl =40 kg

Initial velocity of cart =0

Let the final velocity of cart be .V

Applying conservation of linear momentum : p1-p2

Or

Or 40*5+3*0=(40+3) V

V=200/43 m/s