If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration what's the average velocity of the body?

Average velocity of the body is 21.5 m/s

Explanation:

It is given that,

The velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration.

The initial velocity of the body, u = 13 m/s

The final velocity of the body, v = 30 m/s

It is moving under constant acceleration. The sum of initial velocity and final velocity divided by 2 is called the average velocity of the body. It is given by :

Hence, the average velocity of the body is 21.5 m/s

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray