The figure shows a trajectory of a ball undergoing projectile motion over level

Question

The figure shows a trajectory of a ball undergoing projectile motion over level ground.
how do the speeds velocity original, velocity 1 and velocity 2 (at time original time 1 and time 2 compare?

a)vO=v1=v2>0
b) v0=v2>v1=0
c)v0=v2>v1>0
d)v0>v1>v2>0
e)v0>v2>v1=0

Explanation / Answer

ans is (C.)Vo=V2>V1>0 As due to energy conservation initial and final speed would be same and in between V1 must be less as the kinetic energy get converted into potential energy. OR (B)Vo=V2>V1=0 if V1 is the velocity at the top most point of the trajectory

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