In a projectile motion the $$velocitya)$$ is always perpendicular to the $$accelerationb)$$ is not always perpendicular to the $$accelerationc)$$ is perpendicular to the acceleration for one instant $$onlyd)$$ is perpendicular to the acceleration for two instants.

Question

Infinity Learn · Accepted Answer

Acceleration of projectile is vertically downward. Velocity of a projectile (for$$ oblique $$projection) is horizontal only at the highest position.So Statement $$-(b)$$ is correct and Statement $$-$$ (c) is correct

In a projectile motion the velocity
a) is always perpendicular to the acceleration
b) is not always perpendicular to the acceleration
c) is perpendicular to the acceleration for one instant only
d) is perpendicular to the acceleration for two instants.

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In a projectile motion the velocity a) is always perpendicular to the acceleration b) is not always perpendicular to the acceleration c) is perpendicular to the acceleration for one instant only d) is perpendicular to the acceleration for two instants.

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In a projectile motion the velocity
a) is always perpendicular to the acceleration
b) is not always perpendicular to the acceleration
c) is perpendicular to the acceleration for one instant only
d) is perpendicular to the acceleration for two instants.