What is kinetic energy?

A body is projected such that its kinetic energy at the top of its trajectory is frac(3)(4) of its initial kinetic energy. What is the angle of projection of the projectile?

A freely falling object eventually stops on reaching the ground. What happens to its kinetic energy?

What is the kinetic energy of an object?

An electron is accelerated through a potential differencve 1000V. What is its kinetic energy in MeV.

A body of mass ‘m’ is moving with velocity ‘v' .If the mass of the body is doubled what will be its kinetic energy?

A body of mass ‘m’ is moving with velocity ‘v’: If the velocity is doubled what will be its kinetic energy?

What is the kinetic energy of a body of mass 50 kg after it has fallen from rest for 5 seconds? (g = 9.8 m/s^2 )

An electron of charge 'e' at rest in accelerted in a uniform electric field E. It covers a distance x. What is the kinetic energy gained by the electron?

A solid cylinder of mass 20 kg rotates about its axis with angular speed 100 rad s-^1. The radius of the cylinder is 0.25 m. What is the kinetic energy associated with the rotation of the cylinder? What is the magnitude of angular momentum of the cylinder about its axis?

The blades of a windmill sweep out a circle of area A. (a) If the wind flows at a velocity v perpendicular to the circle, what is the mass of the air passing through it in time f?(b) What is the kinetic energy of the air? (c) Assume that the windmill converts 25% of the wind’s energy into electrical energy, and that A = 30 m^- 2 , v = 36 km/h and the density of air is 1.2 kg m^-3 . What is the electrical power produced?