Advertisements
Advertisements
Question
A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car
Options
does not change
becomes twice to that of initial
becomes 4 times that of initial
becomes 16 times that of initial
Advertisements
Solution
does not change
Explanation:
In the given process, the potential energy of the car does not change as it does not depend on velocity.
APPEARS IN
RELATED QUESTIONS
What are the units of (a) work, and (b) energy?
Is it possible that a force is acting on a body but still the work done is zero? Explain giving one example.
Ravi applied a force of 10 N and moved a book 30 cm in the direction of the force. How much was the work done by Ravi?
What is the work done when the object acted upon by a force remains at rest?
An object is dropped from a height H. when is its
(i) P.E. maximum,
(ii) K.E. maximum,
(iii) P.E. = K.E.?
State the energy changes which take place when Water stored in the dam is used to turn turbine in dynamo.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A donkey is carrying a load on its back.
Look at the activity below. Reason out whether or not work is done in the light of your understanding of the term ‘work’.
A wind-mill is lifting water from a well.
