Advertisements
Advertisements
प्रश्न
When a boy doubles his speed, his kinetic energy becomes
विकल्प
half
double
four times
no change
Advertisements
उत्तर
four times
APPEARS IN
संबंधित प्रश्न
A cannon ball of mass 500 g is fired with a speed of 15 m s-1. Find:
- its kinetic energy.
- its momentum.
By how much will the kinetic energy of a body increase if its speed is doubled?
If the speed of a body is halved, what will be the change in its kinetic energy?
Which would have a greater effect on the kinetic energy of an object : doubling the mass or doubling the velocity?
A bullet of mass 15 g has a speed of 400 m/s. What is its kinetic energy? If the bullet strikes a thick target and is brought to rest in 2 cm, calculate the average net force acting on the bullet. What happens to the kinetic energy originally in the bullet?
Find out the form of energy possessed by the following thing.
Water falls
What are the uses of mechanical energy?
The energy possessed by a cricket ball bowled by a player is ______.
When stored water falls down, potential energy of water is converted into ______.
When the speed of a moving object is doubled, then its kenetic energy ______.
