Question

Girl of mass 40 kg with a horizontal velocity of 5 metre per second on a stationary card with less wheels the mass of the card is 3 kg what is her velocity as the car start moving assume that there is no external unbalanced force working in the horizontal direction ans by energy conservation

Answer 1

Answer:

4.65 m/s

Explanation:

Here, we use the conservation of momentum law i.e Pi=Pf.

And here the final velocity of girl and cart will be equal because she is stationary with respect to card.

Hope u get it...