Question

when velocity is perpendicular to initial velocity in projectile motion​

Answer 1

Answer:

At the highest point of a projectile the acceleration is perpendicular to velocity, and after that the acceleration is downwards velocity may increase or decrease depending on the object also same happens when there is upward motion of the object.

Explanation:

At the highest point of a projectile the acceleration is perpendicular to velocity, and after that the acceleration is downwards velocity may increase or decrease depending on the object also same happens when there is upward motion of the object.

Answer 2

Answer:

For all the angles between  45°  and  90° , there is a point in journey where the velocity is perpendicular to initial velocity direction.

Also playing with values we will notice that higher the projection angle  α , higher is the point on downward journey where velocity is perpendicular to initial velocity.

Explanation:

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