Advertisements
Advertisements
प्रश्न
A car is accelerated on a levelled road and acquires a velocity 4 times of its initial velocity. During this process, the potential energy of the car :
विकल्प
does not change
becomes twice that of initial potential energy
becomes 4 times that of initial potential energy
becomes 16 times that of initial potential energy
Advertisements
उत्तर
Potential energy of an object depends only on its position above the ground and mass.. So, the potential energy of a car traveling on a levelled road does not change.
Therefore, the answer is,
(a) does not change
APPEARS IN
संबंधित प्रश्न
Gravitational potential energy U = mass × force of gravity on unit mass × ..........
State two factors on which the potential energy of a body at a certain height above the ground depends.
A body at a height possesses ______.
A body falls freely under gravity from rest. Name the kind of energy it will possess at the point from where it falls.
Two bodies A and B of equal masses are kept at heights of h and 2h respectively. What will be the ratio of their potential energies?
State whether the following statement is true or false :
The potential energy of a body of mass 1 kg kept at a height of 1 m is 1 J.
To what height should a box of mass 150 kg be lifted, so that its potential energy may become 7350 joules? (g = 9.8 m/s2)
A body of mass 2 kg is thrown vertically upwards with an initial velocity of 20 m/s. What will be its potential energy at the end of 2 s? (Assume g = 10 m/s2).
What is the difference between gravitational potential energy and elastic potential energy? Give one example of a body having gravitational potential energy and another having elastic potential energy.
How much energy is gained by a box of mass 20 kg when a man, raises the box by 0.5 m in order to place it inside the bus? (g=10 m/s-2)
