A body moving in a circular path with a constant speed has a ___

Options:

A . constant velocity

B . constant momentum

C . constant kinetic energy

D . constant acceleration

Answer: Option C : C We can see that direction of velocity and acceleration changes continuously ∴ Both are not constant. Momentum is m.⃗v which depends on velocity and changes with velocity. The only quantity that is constant is speed and kinetic energy is 12m|⃗v|2 where|⃗v| is the speed. ∴ Answer is kinetic energy.

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