Advertisements
Advertisements
Question
When a ball is thrown vertically upwards, its velocity goes on decreasing. What happens to its potential energy as its velocity becomes zero?
Advertisements
Solution
When a ball is thrown vertically upwards, its velocity goes on decreasing and hence, its kinetic energy also keeps on decreasing. As the ball is thrown vertically upwards, its height continuously increases to a certain point and hence, its potential energy increases continuously and reaches its maximum value when the ball reaches the maximum height.
APPEARS IN
RELATED QUESTIONS
State two factors on which the potential energy of a body at a certain height above the ground depends.
Two bodies A and B of masses 10 kg and 20 kg respectively are at the same height above the ground. Which of the two has greater potential energy?
A body of mass m is moved from ground to a height h. If force of gravity on mass of 1 kg is g newton, find the work done in lifting the body.
Find the gravitational potential energy of 2.5 kg mass kept at a height of 15 m above the ground. The force of gravity on mass 1 kg is 10 n.
A body falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls.
Give one example each of a body possessing : (i) kinetic energy, and (ii) potential energy.
Explain by an example what is meant by potential energy. Write down the expression for gravitational potential energy of a body of mass m placed at a height h above the surface of the earth.
If we increase the velocity of a car moving on a flat surface to four times its original speed, its potential energy ______.
The energy, possessed by an object due to its position is called ______.
The potential energy is
