Which of the following is NOT a vector quantity?

(A) Acceleration

(B) Average velocity

(C) Linear momentum

(D) Potential energy

(E) Force

D

Explanation:

Acceleration has both magnitude and direction. because velocity is vector quantity

average velocity is vector

linear momentum = mass * velocity

therefore it's also vector

force = mass * acceleration

acceleration is vector therefore force also vector

potential energy = mgh

energy in any form is scaler quantity therefore potential energy too is a scaler quantity.