Mechanical devices that help us do work

A force that acts on objects. It makes moving objects slow down or stop.

Tells how fast an object is moving.

Tells how much gravity pulls on an object.

Happens when an object changes position when compared to other objects.

Used to measure the amount of force it takes to push or pull an obejct.

A certain place.

A force that pulls objects toward Earth.

Is done only when a force is applied to an object and the object moves a measurable distance.

Shows how much force it takes to lift something.

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