Skip to content
dronacharya.ai
← JEE Main 2022 · 29 Jun · Shift 1
PhysicsSingle correct+4 / -1Question 41 of 90

JEE Main 2022 · 29 Jun · Shift 1, Physics question 41

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 kgs−1^{-1} and at a speed of 10 ms−1^{-1}. Then, the initial acceleration of the block, in ms−2^{-2}, will be :

A water jet from a pipe strikes a 2 kg block resting on a frictionless plane; the block's acceleration a is to the right.
Choose one option
Answer and worked solution

Official answer: C

Force of the jet. dmdtv=1×10=10\frac{dm}{dt}v=1\times10=10 N on the 2 kg block: a=5a=5 m s−2^{-2}.

(C)

Topics:Impulse and momentum
← Previous questionNext question →