A person can carry 20 bricks at a time. Each brick weighs 10 N. If he takes 50 s to carry 20 such bricks to a distance of 100m, what is his power?
A man displaces a box at a distance of 20m by applying 20N force. What is his work done? If he takes 2 sec time for the work, calculate power.
An inclined plane is 3m high. If a kid sits at the top, what will be his potential energy? The mass of the kid is 40 kg.
If a stone of 0.5 kg is thrown with a speed of 5 m/s, find its kinetic energy.
What is the energy required to lift an object of mass 25 kg to a height of 10 m?
Explain the relation between work and energy with examples.