1(ii)
When the speed of a moving object is doubled, then its kinetic energy:
- (a)remains the same
- (b)decreases
- (c)is doubled
- (d)becomes four times
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becomes four times
Reason — According to the formula :
Kinetic energy = $\frac{1}{2}$mv2
Hence, when speed (v) is doubled the kinetic energy increases by 4 times.