If a projectile is fired with an initial velocity of 10 m/sec at an angle of 60° to the horizontal, its horizontal and vertical velocity at the highest point of trajectory are___________________?
(A) 0 and 5 m/sec
(B) 5 m/sec and 0
(C) 5 V3 m/sec and 0
(D) 5 and 5V3 m/sec
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