Forces, Motion and Machines

Science

a change in velocity with respect to time

Acceleration explained in an easy to understand way.

the force used on a simple machine

Effort force explained in an easy to understand way.

the push or pull exerted on an object

Force explained in an easy to understand way.

the force that opposes motion between two surfaces that are touching

Friction explained in an easy to understand way.

fixed point on which a lever pivots

Fulcrum explained in an easy to understand way.

the attractive force between all objects that have mass

Gravity explained in an easy to understand way.

a simple machine with a flat, sloped surface

Inclined plane explained in an easy to understand way.

the tendency of objects to resist any change in motion

Inertia explained in an easy to understand way.

a simple machine that consists of a bar that pivots on a fixed point

Lever explained in an easy to understand way.

a device that uses electrical energy to do work

Load explained in an easy to understand way.

a change in an object’s position

Motion explained in an easy to understand way.

the location of an object

Position explained in an easy to understand way.

a simple machine made of a wheel with a rope around it

Pulley explained in an easy to understand way.

a simple machine made of an inclined plane wrapped around a cylinder

Screw explained in an easy to understand way.

a device that changes a force with one movement, like a lever, inclined plane, wedge, screw, wheel and axle, or pulley

Simple machine explained in an easy to understand way.

the distance an object travels per unit of time

Speed explained in an easy to understand way.

speed and direction of a moving object

Velocity explained in an easy to understand way.

a simple machine made of one or two inclined planes

Wedge explained in an easy to understand way.

measure of the force of gravity on an object

Weight explained in an easy to understand way.

a simple machine made of a wheel with a rod joined at its center, they rotate together

Wheel and axle explained in an easy to understand way.

the use of force to move an object over a distance, its unit is the Joule (J)

Work explained in an easy to understand way.

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