Advertisements
Advertisements
प्रश्न
By how much will the kinetic energy of a body increase if its speed is doubled?
उत्तर
Kinetic energy of a body is directly proportional to the square of velocity. So, the kinetic energy will become four times the initial value when velocity is doubled.
APPEARS IN
संबंधित प्रश्न
A car is moving with a speed of 15 km h-1 and another identical car is moving with a speed of 30 km h-1. Compare their kinetic energy.
If the speed of a car is halved, how does its kinetic energy change?
If the speed of a body is halved, what will be the change in its kinetic energy?
A ball of mass 200 g falls from a height of 5 metres. What is its kinetic energy when it just reaches the ground? (g = 9.8 m/s2)
A body of 2 kg falls from rest. What will be its kinetic energy during the fall at the end of 2 s? (Assume g = 10 m/s2)
What are the uses of mechanical energy?
Water stored in water dams possesses kinetic energy.
The kinetic energy of a body of mass 4 kg and momentum 6 Ns will be
If the mass as well as the velocity of a body is doubled then the kinetic energy of the body ______ the initial kinetic energy.
Find the kinetic energy of a body of mass 5 kg moving with a uniform velocity of 10 m s-1.
