A force of 20 N acts on a body at rest. What will be its momentum after 10 seconds?

A torque of 50 Nm acts on a rotating body for 5 s. Its angular momentum

Solve the following examples: A force of 20 N acts on a body. If the displacement of the body is 0.6 m in the direction opposite to that of the force, calculate the work done by the force.

A certain force acts on a body at rest. If after 10 seconds the body moves with a velocity of 20 m/s and if its mass is 3 kg, find the magnitude of the force acting on the body.

A body of mass 20 kg is initially at rest. A force of 10 N is applied to the body. Find the velocity of the body after 10 seconds and the distance covered by it in the ten seconds on application of the force.

A body is projected horizontally from a height with speed 20 metres/second. What will be its speed after 5 second? [g= 10 metre/second^2]

The momentum of a body of mass 8 kg is 20 kg m/s. A force of 12 N acts on the body in the direction of motion for 4 s, the increase in the kinetic energy is

When a force of 30 N acts on a body, the body is displaced by 10 m in the direction inclined at 60^@ to the force. Find the work done by the force.

Solve the following examples: When a force of 20 N acts on a body, the body is displaced by 5 m. If the angle between the force and displacement is 60° , find the work done by the force.

A body of mass 5 kg moves with an acceleration of 4 m/s^(2) in a straight line. What will be the change in its momentum in 2 seconds?

The masses of 10 kg and 20 kg respectively are connected by a massless spring as shown in figure. A force of 200 N acts on the 20 kg mass. At the instant shown, the 10 kg mass has acceleration 12" m"//"s"^(2) . What is the acceleration of 20 kg mass?