In projectile motion, we know that:

-the acceleration is always downward.

-The horizontal velocity (velocity in the x-direction) is constant.

A projectile is launched at an angle of 30°.

a) Is there any point on the trajectory where v and a are parallel to each other? If so, where?

b) Is there any point on the trajectory where v and a are perpendicular to each other? If so, where?

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