An athlete runs some distance before taking a long jump because

The combined effect of mass and velocity is taken into account by a physical quantity called

Qualitative definition of force is given by

A force of 15 N acts separately on two bodies of masses 3 kg and 5 kg. The ratio of the accelerations produced in the two cases will be

A train drop of mass 0.1g is falling with uniform speed of \(10 cm^{-1}\) What is the net force acting on the drop?

A and B are two objects with masses 6 kg and 34 respectively

If action and reaction were to act on the same body,

When we kick a stone, we get hurt. Due to which one of the following properties of the stone does it happens?

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?

On what factor does the inertia of a body depend; explain with the help of a suitable example.

Two blocks made of different metals identical in shape and size are acted upon by equal forces which cause them to side on a horizontal surface. The acceleration of the second block is found to be 5 times that of the first, what is the ratio of the mass of the second to the first?

State the law of conservation of momentum. Prove this law by taking the case of collision of two bodies.
Hence in the absence of an external force, the total momentum of a group of objects remains unchanged or conserved during the collision. This is the law of conservation of momentum.

Two objects of masses 100 g and 200 g are moving along the same line and direction with velocities of \(2m{s}^{-1}\) and \(1m{s}^{-1}\), respectively. They collide and after the collision, the first object moves at a velocity of \(1.67 m s ^{-1}\) Determine the velocity of the second object.

How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m s^–2.

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