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

a-17 m/s
b-19.5 m/s
c-28 m/s
d-21.5 m/s

If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration, the average velocity of the body is 21.5 m/s. the answer is letter D. Velocity is a vector quantity and average velocity can be defined as the sum of the initial and final velocity divided by 2 at constant acceleration.

and 1and 1

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.