Advertisements
Advertisements
Question
On what factors does the kinetic energy of a body depend?
Advertisements
Solution
The kinetic energy of a moving body depends upon two factors. It is directly proportional to the following:
(i) The mass of the moving body
(ii) The square of the velocity of the moving body
APPEARS IN
RELATED QUESTIONS
Certain force acting on a 20 kg mass changes its velocity from 5 m s-1 to 2 m s-1. Calculate the work done by the force.
Define the term kinetic energy. Give one example of a body which possesses kinetic energy.
A body is thrown vertically upwards. Its velocity keeps on decreasing. What happens to its kinetic energy as its velocity becomes zero?
Write an expression for the kinetic energy of a body of mass m moving with a velocity v.
How fast should a man of 50 kg run so that his kinetic energy be 625 J?
Two objects having equal masses are moving with uniform velocities of 2 m/s and 6 m/s respectively. Calculate the ratio of their kinetic energies.
On a level road, a scooterist applies brakes to slow down from a speed of 10 m/s to 5 m/s. If the mass of the scooterist and the scooter be 150 kg, calculate the work done by the brakes. (Neglect air resistance and friction)
The momentum of a bullet of mass 20 g fired from a gun is 10 kg.m/s. The kinetic energy of this bullet in kJ will be :
What are the uses of mechanical energy?
When stored water falls down, potential energy of water is converted into ______.
