Newton's Laws Of Motion MCQ - Practice Questions with Answers

A machine gun fires a bullet of mass of 40g with a velocity of 1200 ms^-1 The man holding it can exert a maximum force of 144 N on the gun. How many bullets can he fire per second at the most?

When forces F₁, F₂, and F₃ are acting on a particle of mass  m such that F₂ and F₃  are mutually perpendicular, then the particle remains stationary If the force F₁ is now removed then the acceleration of the particle is :

A particle of mass m is at rest at the origin at time $\mathrm{t}=0$. It is subjected to a force $F(t)=F_0{e}^{-bt}$ in the x direction Its speed $v(t)$ is depicted by which of the following curves ?

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 $2{\mathrm{ms}}^{-1}$. The velocity of the running man was _______ $$ ${\mathrm{ms}}^{-1}$, when he jumps into the car.

A body of mass M hits normally a rigid wall with velocity V and bounces back with the same velocity. The impulse experienced by the body is 

The mass of a lift is 2,000 kg. When the tension in the supporting cable is 28000N, then its acceleration is:

A bullet fired into a fixed target loses half its velocity after penetrating 3 cm. How much further will it penetrate before coming to rest, assuming that it faces constant resistance to motion? (in cm)

The figure shows the position-time $(x-t)$ graph of one-dimensional motion of a body of mass 0.4 kg. The magnitude of each impulse (in N-s)  is

A book exerts a force of 2N downwards, into a chair that exerts a force of 5N downwards to the floor it stands on. What is the force (in N) that the floor exerts upwards on the chair?