Aforce has to have what two factors? magnitude and velocity. velocity and acceleration. magnitude and direction. size and speed.

The earth remains in orbit around the sun due to the force of gravity. how does the force of gravity exerted by the sun on the earth compare to the force of gravity exerted by the earth on the sun?

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

Using the free-body diagram, calculate the net force acting on the sled. is the sled in a state of dynamic equilibrium?