An iron sphere of mass 11 kg has the same diameter as an aluminum sphere of mass is 35 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same

A car is accelerated on a labeled road and attains a velocity 8 times of its initial velocity. In this process the potential energy of the car

In case of negative work the angle between the force and displacement is

A girl is carrying a school bag of 5 kg mass on her back and moves 300 m on a levelled road. The work done against the gravitational force will be (g =10 m s^–2)

Which one of the following is not the unit of energy?