A body is thrown vertically upwards with an initial velocity u. Write an expression for the maximum height attained by the body.

The value of g at the center of the earth is zero. What will be the weight of a body of mass m kg at the center of the earth ?

A body falls freely under gravity from rest and reaches the ground in time t. Write an expression for the height fallen by the body.

Which of the following quantity does not change by change of place of a body — mass or weight ?