MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Kinetic Energy

If the speed ...

Question

If the speed of a car is halved, how does its kinetic energy change?

Open in App

Solution

if the speed is halfed ...then.let the new kinetic energy be
.and its new velocity ( ) =

$equals 1 half m v squared over 4 equals fraction numerator begin display style 1 half end style m v squared over denominator 4 end fraction$
= 1/4 K.E1

Hence , the new kinetic energy must be th of the previous kinetic energy.

Suggest Corrections

thumbs-up

3

Similar questions

Q. If the speed of a car is halved, how does its kinetic energy change?

Q. If the speed of a body is halved, what will be the change in its kinetic energy?

If the velocity of a moving car is halved, its kinetic energy would

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 :

(a) does not change

(b) becomes 4 times that of initial kinetic energy

(c) becomes 8 times that of initial kinetic energy

(d) becomes 16 times that of initial kinetic energy

How does the kinetic energy of an object change, when its (i) mass alone is doubled and (ii) speed alone is doubled?

View More

Join BYJU'S Learning Program

explore_more_icon

Explore more

Standard X Physics

Join BYJU'S Learning Program

CrossIcon