Problem on velocity - Law of conservation of momentum — task. Science State Board, Class 10.

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A boy of mass 45

$kg$ jumps with a horizontal velocity of 4

$m s^{- 1}$ 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 the horizontal direction.

Velocity

$=$

$m s^{- 1}$

[Note: Enter your answer with 2 decimal digits]

$1$

Did you find an error?

9. Problem on velocity - Law of conservation of momentum