A girl of mass 40kg jumps with a horizon...

A girl of mass `40kg` jumps with a horizontal velocity of `5m//s` onto a stationary cart with frictionless wheels. The mass of the cart is `3kg`. What is her velocity as the cart starts moving? Assume that there is no external unbalanced force working in the horizontal direction.

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To solve the problem step by step, we will use the principle of conservation of linear momentum. ### Step 1: Identify the given values - Mass of the girl (m1) = 40 kg - Initial velocity of the girl (u1) = 5 m/s - Mass of the cart (m2) = 3 kg - Initial velocity of the cart (u2) = 0 m/s (since it is stationary) ...

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