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.

(asap) uneven heating of the earth's surface is due primarily to the position of the equator, north pole, sun, or moon?

When the acceleration of a mass on a spring is zero, the velocity is at a (fill in the blank) . when the velocity of a mass on a spring is zero, the acceleration is at a (fill in the blank) .

Based on the diagram of the electric field lines around the two spherical charges, what are the signs of the left and right charge respectively?