What is the displacement of a spring if it has a spring contstant of 10 n/m, and a force of 2.5 n is applied?

How does the kinetic energy of a charge change as the charge moves under the effect of an electric field from higher potential to lower potential? a.the kinetic energy increases.b.the kinetic energy decreases.c.the kinetic energy remains the same.d.the kinetic energy is always zero.

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

While the change in blank will remain the same during a collision, the force needed to bring an object to a stop can be blank if the time if collision is blank