
Define work.

Important Questions on Work and Energy

From the following activity listed below, state whether or not work is done. Give your reason as well.
An apple is falling off a tree.

From the following activity listed below, state whether or not work is done. Give your reason as well.
A girl is pushing a book on a table.

From the following activity listed below, state whether or not work is done. Give your reason also.
A horse is pulling a cart.

From the following activity listed below, state whether or not work is done. Give your reason as well.
Sunil is reading a book.

From the following activity listed below, state whether or not work is done. Give your reason as well.
A man is pushing a wall.

From the following activity listed below, state whether or not work is done. Give your reason as well.
A man is holding a bucket of water.

From the following activity listed below, state whether or not work is done. Give your reason as well.
A porter is carrying a load on his head.
