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A projectile is fired at an angle of elevation of 30°. Neglecting air resistance, what are...

A projectile is fired at an angle of elevation of 30°. Neglecting air resistance, what are possible angles in flight between the acceleration vector and the velocity vector?

160° and 40°

20° and 70°

90° and 30°

none of the above

10° and 30°

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Answer #1

Velcoity vector will make same angle at which projectile is done i.e at 30° and

Acceleration vector will make an angle of 90° in case of vertical acceleration.

Hence, 3rd option, 90° and 30° is correct.

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