Summarize how work is made easier when you use a wheelbarrow to push a heavy load of gravel up a hill. Identify the machine that is not part of the wheelbarrow.

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

A2000 kg car is rounding a curve of radius 200 m on a level road. the maximum frictional force the road can exert on the tires of the car is 4000 n. what is the highest speed at which the car can round the curve?

The amount of potential energy possessed by an elevated object is equal to what?