It took 50 joules to push a crate 2.5 meters. With what force was the crate pushed?

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

Aphysical change is a change in the size, shape,, or stafe of matter true or false