Question 166: Motion in 2D & Vectors

Question

A particle is executing uniform circular motion with velocity $$\vec{v}$$ and acceleration $$\vec{a}$$. Which of the following is true?

Accepted Answer

Direction of velocity and centripetal acceleration changes continuously so $$\vec{v}$$ is not constant and $$\vec{a}$$ is not a constant.

Answer

$$\vec{v}$$ is a constant; $$\vec{a}$$ is not a constant

Answer

$$\vec{v}$$ is not a constant; $$\vec{a}$$ is not a constant

Answer

$$\vec{v}$$ is a constant; $$\vec{a}$$ is a constant

Answer

$$\vec{v}$$ is not a constant; $$\vec{a}$$ is a constant

Motion in 2D & Vectors