Question

At the highest point of a projectile, its velocity and acceleration are at an angle of ___________

(a) 0°

(b) 45°

(c) 90°

(d) 180°

This question was posed to me by my school principal while I was bunking the class.

I need to ask this question from Motion in a Plane topic in chapter Laws of Motion of Engineering Physics I

Answer 1

The correct choice is (c) 90°

For explanation: At the highest point of projectile, it has only horizontal velocity while the acceleration due to gravity acts vertically downwards. Therefore they are at an angle of 90°.