JEE Main 2022 · 28 Jun · Shift 1 · Physics Q56

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PhysicsInteger+4 / -1Question 56 of 90

A man of 60 kg is running on the road and suddenly jumps into a stationary trolly car of mass 120 kg. Then, the trolly car starts moving with velocity 2 ms $^{-1}$ . The velocity of the running man was ______ ms $^{-1}$ , when he jumps into the car.

Your answer

Answer and worked solution

Official answer: 6

Momentum. $60u=(60+120)\times2$ , so $u=6$ m s $^{-1}$ .

Answer: 6

Topics:Conservation of linear momentum

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JEE Main 2022 · 28 Jun · Shift 1, Physics question 56