- Calculation of kinetic and potential energies from a set of given data (Simple problems and assuming g=10 m/s2)
The potential energy of a body of mass 0.5 kg increases by 100 J when it is taken to the top of a tower from ground. If force of gravity on 1 kg is 10 N, what is the height of the tower ?
Fill in the blank
The potential energy of a body is due to its state of ...................and kinetic energy of body is due to its ...............
Select the correct alternative
A boy lifts a luggage from height 2 m to 4 m. The potential energy will become
Give reasons for the following Hammer drives a nail into the wood only when it ¡s lifted up and then struck.
A truck of mass 1000 kg, increases its speed from 36 km h-1 to 72 km h-1. Find the increase is its kinetic energy.