Flash Card
In which of the following cases is no work done?
If we increase the velocity of a car moving on a flat surface to 4 times its original speed, its potential energy............... .
The work done is zero if there is no............... .
The potential energy of your body is least when you are ................ .
What happens to the kinetic energy of an object when its velocity is doubled?
The total energy of an object falling freely towards the ground........... .
By stretching the rubber strings of a catapult, we store ......... energy in it.
.............. is the commercial unit of power.
A bullet fired from a gun possesses ................. energy.
1 hp =............ .
Which of the following is not a conservative force?
Which of the following factors does not affect the gravitational potential energy of an object?
SI unit of work is ........... .
1 kWh = ......... joules.
The work done on an object does not depend on............. .
Which of the following quantities is a scalar?
Choose the odd one out: Kinetic energy, Mechanical energy, Gravitational potential energy, Sound energy.
Which of the following is an example of potential energy?
Potential energy of a body is given by (P.E) =............. .
The work done by a force is said to be ........... when the applied force does not produce displacement.
When some unstable atoms break up, they release tremendous amount of ............ energy.
If a force of 20 N is applied to move an object a distance of 5 m, the work done would be:
Kinetic energy of a body (KE) = .................
Work is the product of ............ .
............... is the capacity to do work.
