JEE Main202229 Jun 2022Morning ShiftPhysicsLaws of MotionActual
A block of metal weighing 2 kg is resting on a frictionless plane (as shown in figure). It is struck by a jet releasing water at a rate of 1 kg s - 1 and at a speed of 10 m s - 1 . Then, the initial acceleration of the block, in m s - 2 , will be
Options
- A3
- B6
- C5
- D4
Correct answer
C. 5
Step-by-step solution
Let velocity of water jet be v . So, force applied is F = Δ p Δ t = ∆ m v Δ t ⇒ m a = ∆ m v Δ t Acceleration of block, a = 1 × 10 2 a = 5   m   s - 2