Question

At the maximum height of a projectile, the velocity and acceleration are

• A. parallel to each other
• B. antiparallel to each other
• C. perpendicular to each other
• D. inclined to each other at ${45}^0$

Answer 1

The correct option is C perpendicular to each other

At maximum height ;
$v_x=v_x\cos \theta$ in horizontal direction and $v_y=0$
$a_x=0,a_y=-g$
Clearly angle between them is ${90}^{\circ }.$