Newton's Laws Of Motion Mock Tests

A bus moving at a constant speed of 60 km/h suddenly applies brakes. A passenger standing inside the bus tends to fall forward. This is due to:

A book rests on a table. According to Newton's third law of motion, every action has an equal and opposite reaction. If the action is the Earth pulling the book downward (gravity), what is the reaction force?

Two blocks of masses 4 kg and 6 kg are connected by a light string and placed on a smooth horizontal surface. A horizontal force of 30 N is applied to the 6 kg block. The tension in the string is:

A bullet of mass 20 g moving with a speed of 300 m/s strikes a stationary wooden block of mass 2 kg and gets embedded in it. What is the final speed of the combined system? (Take g = 10 m/s²)

Two blocks of masses 5 kg and 3 kg are connected by a light string passing over a frictionless pulley. The system is released from rest. The acceleration of the system is: (Take g = 10 m/s²)

A ball of mass 0.1 kg moving with a speed of 10 m/s collides with a wall and rebounds with a speed of 6 m/s in the opposite direction. If the contact time is 0.02 s, the average force exerted by the wall on the ball is:

Two masses m₁ = 4 kg and m₂ = 6 kg are connected by a light inextensible string passing over a frictionless pulley. The system is released from rest. What is the tension in the string? (Take g = 10 m/s²)

A cricket ball of mass 0.15 kg is moving with a velocity of 20 m/s. A player stops it in 0.05 s. The impulse imparted to the ball and the average force exerted by the player on the ball are respectively: