The speed of a car changes from `0` to `5 ms^(-1)` in the first phase and from `5 ms^(-1)` to `10 ms^(-1)` in the second phase and from `10 ms^(-1)` to `15 ms^(-1)` during the third phase. In which phase the increase in kinetic energy is more ?

Options

A. first phase
B. second phase
C. third phase
D. same in all the three phases

Answer

C

Explanation

`Delta KE = (1)/(2) m(v^(2) -u^(2))`.