Laws of Motion ...

A force of 20 N acts on a body of mass 5 kg for 2 seconds initially at rest. Find velocity acquired by body and change in momentum of body.

A crane pulls 5 boxes of mass 100 kg each attached to each other. The boxes are kept in a row horizontally. The crane exerts a force of 6000 N and the boxes offer a frictional force of 800 N. Find the accelerating force and the acceleration of the boxes. (mass of crane = 2000 kg)

Find mass of the body if its initial mass is 5.3 kg and velocity is 1.2 X 10⁸ m/sec

A plant revolves around another planet at a distance of 1500 km. If their masses are 6.39 X 10²⁶ kg and 2.36 X10¹⁹ kg, final gravitational pull.

What is the gravitational force of attraction Tom and John standing 20 m apart. (Given their masses are 40 kg and 70 kg and G = 6.7 X 10^-11 Nm²/ kg²) 

A force acts for 2 seconds on a body of mass 3 kg initially at rest. The force then ceases to act and the body moves through 5 m in the next one second. Find magnitude of force.

A ball is hanging form a rigid support by a string. Given that mass of ball is 1 kg, find force exerted by block on string and that on the block (Take g = 10 m/sec²)

Find force of gravity on dining table of mass 50 kg

The two similar satellites revolve around earth in circular orbits. Given that radius of satellite I is less than radius of satellite II, which of the following is true?