A block of mass M is pulled with a force F along a smooth horizontal surface with a rope of mass m. The acceleration of the block will be

\(kg-m/s^2\) is the unit of 

A force acts on an object which is free to move. if we know the magnitude of the force and the mass of the object, Newton's second law of motion enables us to determine the object's

A man is standing in a boat in still water. If he tries to walk towards the shore, the boat will

What is the momentum of an object of mass m, moving with a velocity v?

Define the term inertia, what are the different types of inertia?

Give the meaning of the term inertia.

What are all cars provided with seat belts?

Why do you fall in the forward directions when a moving bus brakes to a stop and fall backward when it accelerates from rest?

A man pushes a box of mass 50 kg with a force of 80 N. What will be an acceleration of the box due to this force? What would be an acceleration if the mass is halved?

State the law of conservation of momentum. Write the equation describing the principle.

From a rifle of mass 4 kg, a bullet of mass 5 g is fired with an initial velocity of 35 \(m s^{-1}\) Calculate the initial recoil velocity of the rifle.

An object of mass 1 kg travelling in a straight line with a velocity of 10 m s^–1 collides with, and sticks to, a stationary wooden block of mass 5 kg. Then they both move off together in the same straight line. Calculate the total momentum just before the impact and just after the impact. Also, calculate the velocity of the combined object.

A motorcar of mass 1,200 kg is moving along a straight line with velocity of 90 km/h. Its velocity is slowed down to 18 km.h s by an unbalanced external force. Calculate the acceleration and change in momentum. Also, calculate the magnitude of the force required.

A large truck and a car, both moving with a velocity of magnitude v, have a head on collision and both of them come to a halt after that. If the collision late for 1 s:
(a) which vehicle experiences the greater force of impact?
(b) Which vehicle experiences the greater change in momentum?
(c) Which vehicle experiences the greater acceleration?
(d) Why is the car likely to suffer more damage than the truck?

State Newton's first law of motion. Explain it with the help of suitable examples.

(a) Express Newton's second law mathematically explaining the symbols used.
(b) Define SI unit of force from this expression.