Intro to Forces + Newton's Laws Video Lessons

Concept

# Problem: Which object has zero acceleration? A) one at rest B) one moving at constant velocity C) one in mechanical equilibrium D) all of the above E) none of the above

###### FREE Expert Solution

This problem requires us to identify the magnitude of the acceleration of objects. We'll need Newton's second law and the expression for the change in velocity.

Newton's second law:

$\overline{){\mathbf{\Sigma }}{\mathbf{F}}{\mathbf{=}}{\mathbf{m}}{\mathbf{a}}}$

Acceleration:

$\overline{){\mathbf{a}}{\mathbf{=}}\frac{\mathbf{∆}\mathbf{v}}{\mathbf{∆}\mathbf{t}}}$

###### Problem Details

Which object has zero acceleration?

A) one at rest

B) one moving at constant velocity

C) one in mechanical equilibrium

D) all of the above

E) none of the above