If the speed of a car is halved, how does its kinetic energy change?
if the speed is halfed ...then.let the new kinetic energy be .and its new velocity ( ) =
= 1/4 K.E1
Hence , the new kinetic energy must be th of the previous 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?