Advertisements
Advertisements
प्रश्न
The kinetic energy of a given body depends on the ______.
पर्याय
position
center of gravity of the body
momentum
displacement
उत्तर
The kinetic energy of a given body depends on the momentum.
APPEARS IN
संबंधित प्रश्न
The energy of a flying kite is kinetic energy.
A cyclist doubles his speed. How will his kinetic energy change: increase, decrease or remain same?
If the speed of a car is halved, how does its kinetic energy change?
A body of mass 10 kg is moving with a velocity 20 m s-1. If the mass of the body is doubled and its velocity is halved, find:
- the initial kinetic energy, and
- the final kinetic energy.
Two bodies have masses in the ratio 5 : 1 and their kinetic energies are in the ratio 125 : 9. Calculate the ratio of their velocities.
By how much will the kinetic energy of a body increase if its speed is doubled?
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)
A car is accelerated on a levelled road and attains a speed of 4 times its initial speed. In this process, the kinetic energy of the car :
What are the uses of mechanical energy?
A car of mass 120 kg is moving at a speed 18 km/h and it accelerates to attain a speed of 54 km/h in 5 seconds. Calculate:
- the work done by the engine.
- the power of the engine.