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JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A rocket of mass 100 kg burns 0.1 kg of fuel per sec. If the velocity of the exhaust gas is 1 km/sec, then it lifts with an acceleration of

Answer: (D)

Solution

Thrust = (rate of fuel burn) × (exhaust velocity) = 0.1 × 1000 = 100 N. Acceleration = Thrust/mass = 100/100 = 1 ms⁻².

Question ID VK-153268