Science 4.2

​ (a)   is a push or pull.

Everyday we apply​ (b)   to do work.

• Force
• force
• Motion
• motion

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Person A is pushing the box towards the tree. PersonB is pushing the box towards the house. Let us assume that both of them are applying the same amount of force.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

The box will​ (a)   .

Equal forces applied to an object from opposite ​ (b)   are called balanced forces.

• not move
• directions
• sides

The rope will move towards the directions of the house. In this situation, the objectives where the greater​ (a)   directs it. Unequal amount of forces that acts on an object are called​ (b)   forces.

• force
• unequal
• equal
• motion

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NGSS.MS-PS2-2

Force can be measured. It is expressed in ​ (a)   . This unit was named after a physicist and mathematician, Sir Isaac​ (b)  

• Newton
• Isaac
• Newtown

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A body at rest stays at​ (a)   and a body in motion stays in ​ (b)   along a straight line, unless an external force acts upon it. This is also known as the law of ​ (c)  

• rest
• motion
• Inertia
• Inertial

A ball stays at rest unless applies force to it by kicking.

• something

• someone

• anything

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NGSS.MS-PS2-2

The motion of an object may change depending on the​ (a)   of force applied to it. This law is known as the law of force and ​ (b)  

• amount
• acceleration
• accelerate
• matter

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NGSS.MS-PS2-2

The greater the force you apply on an object the_____it will move.

• slower

• faster

• remain

• stop

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NGSS.MS-PS2-2

NGSS.MS-PS3-1

For every action produced by force, there is an equal and opposite​ (a)   . This is known as the law of action and ​ (b)  

• reaction
• Interaction
• attraction

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NGSS.MS-PS2-1