Kaye knocks a 4 kg rock off a 20m cliff. What is the maximum speed of the rock just before it hits the gound?

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.

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?

Aforce of 100 newtons is used to move an object a distance of 15 meters with a power of 50 watts. find the work dine and the time it takes to do the work