Pablo rode a skateboard up a ramp for a distance of 3.8 m. if the ideal mechanical advantage of the ramp is 2, how far above the ground was pablo?

The plum pudding model of the atom state that ?

Asmall 21 kilogram canoe is floating downriver at a speed of 1 m/s. what is the canoe's kinetic energy?

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.