question_answer

At the top of the trajectory of a projectile, thrown at an angle of projection\[\theta <90{}^\circ ,\] its:

A)  velocity is zero

B)  velocity is parallel to the direction of acceleration

C)  velocity is anti-parallel to the direction of acceleration

D)  acceleration is zero

E)  velocity is perpendicular to the direction of acceleration

Correct Answer: E

Solution :

At the highest point (P) of the project trajectory, vertical component of velocity is zero, only horizontal component exists which is perpendicular to the direction of acceleration.