Forces 5a Contact and non Contact Forces

What are contact forces?

• Forces between similar objects

• Forces between touching objects

• Forces between objects that do not touch

What is a non-contact force?

• Forces between touching objects

• Forces between objects that do not touch

• Forces between objects that are different to each other

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NGSS.MS-PS2-3

NGSS.MS-PS2-4

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What is the unit of force?

• Joule (J)

• Watt (W)

• Newton (N)

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NGSS.MS-PS2-1

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Which of these is a contact force?

• Tension

• Attraction

• Repulsion

Which of these involves a contact force?

• A planet in orbit around a star

• A skydiver falling through the air

• Electrons attracted to the nucleus of an atom

Tags

NGSS.MS-PS2-1

Which of these is a non-contact force?

• Friction

• Reaction force

• Weight

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NGSS.MS-PS2-3

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Which of these words describes the force between the north pole of a magnet and the south pole of another magnet?

• Attraction

• Contraction

• Reaction

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NGSS.MS-PS2-3

Which of these words describes the force between two negatively charged particles?

• Gravitational

• Compression

• Repulsion

What must an object have in order to be affected by electrostatic forces?

• Charge

• Mass

• Motion

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

What must an object have in order to be affected by gravity?

• Charge

• Mass

• Magnetism

Tags

NGSS.MS-PS2-2

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