A5-kilogram rock is perched on a cliff 6 meters above a
lake. how much gravitational potential energy does the rock
have?
oa) 30 j
o b) 90 j
oc) 147
od) 294

Does heating a metal wire increase or decrease its electrical resistance? why?

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane