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.
Explain the relation between work and energy with examples.
Write down the transformation of energy in the torchlight.
The mass of Sparsha is 40kg. He takes 10 seconds to climb a ladder of 14 steps each having height of 15cm. Find his power.