An aeroplane moving in a circular path with a speed `250 km//h`. The change in velocity in half of the revolution is.

Options

A. zero
B. `100 km //h^(2)`
C. `50 km//h^(2)`
D. `25 km//h^(2)`

Answer

B

Explanation

Average acceleration`=(change "in" velocity )/(time)=(300-(-300))/(12//2)=100km//h^(2)`