Forces, Motion and Machines

Science

Watch Lesson: Forces, Motion and Machines

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a change in velocity with respect to time

A Change In Velocity With Respect To Time.

Acceleration

Acceleration Simple Definition

the force used on a simple machine

The Force Used On A Simple Machine.

Effort Force

Effort Force Simple Definition

the push or pull exerted on an object

The Push Or Pull Exerted On An Object.

Force

Force Simple Definition

the force that opposes motion between two surfaces that are touching

The Force That Opposes Motion Between Two Surfaces That Are Touching.

Friction

Friction Simple Definition

fixed point on which a lever pivots

Fixed Point On Which A Lever Pivots.

Fulcrum

Fulcrum Simple Definition

the attractive force between all objects that have mass

The Attractive Force Between All Objects That Have Mass.

Gravity

Gravity Simple Definition

a simple machine with a flat, sloped surface

A Simple Machine With A Flat, Sloped Surface.

Inclined Plane

Inclined Plane Simple Definition

the tendency of objects to resist any change in motion

The Tendency Of Objects To Resist Any Change In Motion.

Inertia

Inertia Simple Definition

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

A Simple Machine That Consists Of A Bar That Pivots On A Fixed Point.

Lever

Lever Simple Definition

a device that uses electrical energy to do work

A Device That Uses Electrical Energy To Do Work.

Load

Load Simple Definition

a change in an object’s position

A Change In An Object’s Position.

Motion

Motion Simple Definition

the location of an object

The Location Of An Object.

Position

Position Simple Definition

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

A Simple Machine Made Of A Wheel With A Rope Around It.

Pulley

Pulley Simple Definition

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

A Simple Machine Made Of An Inclined Plane Wrapped Around A Cylinder.

Screw

Screw Simple Definition

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

A Device That Changes A Force With One Movement, Like A Lever, Inclined Plane, Wedge, Screw, Wheel And Axle, Or Pulley.

Simple Machine

Simple Machine Simple Definition

the distance an object travels per unit of time

The Distance An Object Travels Per Unit Of Time.

Speed

Speed Simple Definition

speed and direction of a moving object

Speed And Direction Of A Moving Object.

Velocity

Velocity Simple Definition

a simple machine made of one or two inclined planes

A Simple Machine Made Of One Or Two Inclined Planes.

Wedge

Wedge Simple Definition

measure of the force of gravity on an object

Measure Of The Force Of Gravity On An Object.

Weight

Weight Simple Definition

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

A Simple Machine Made Of A Wheel With A Rod Joined At Its Center, They Rotate Together.

Wheel And Axle

Wheel And Axle Simple Definition

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

The Use Of Force To Move An Object Over A Distance, Its Unit Is The Joule (J).

Work

Work Simple Definition

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