StreakPeaked· Practice

ExamsJEE MainPhysics

A rocket initially ejects gas from its rear at a mass rate of 0.1 kg s⁻¹. If the exhaust speed relative to the rocket is 50 m s⁻¹ and the rocket’s mass is 2 kg, what is its acceleration in m s⁻²?

  1. 5.2
  2. 2.5
  3. 25
  4. 10

Correct answer: 2.5

Solution

Thrust force = (exhaust speed)*(mass rate) = 50*0.1 = 5 N. Acceleration = thrust/mass = 5/2 = 2.5 m/s^2.

Related JEE Main Physics questions

⚔️ Practice JEE Main Physics free + battle 1v1 →