It usually takes more force to start an object sliding than it does to keep an object sliding because static friction is usually than sliding friction.

Polly is pushing a box across the floor with a force of 30 n. the force of gravity is –8 n, and the normal force is 8 n. which value could describe the force of friction if polly could not move the box?

What is the magnitude of the acceleration vector which causes a particle to move from velocity −5i−2j m/s to −6i+ 7j m/s in 8 seconds. answer in m/s.

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?