Contact Forces

What is the relationship between force, mass, and acceleration?

• Force = Mass + Acceleration

• Force = Mass x Acceleration

• Force = Mass / Acceleration

• Force = Acceleration - Mass

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NGSS.MS-PS2-2

What happens to the strength of contact forces when two objects make contact during a collision?

• They become equal but in opposite directions.

• They increase exponentially with speed.

• They become negligible after the collision.

• They remain constant regardless of the collision.

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NGSS.MS-PS2-1

What is the elastic limit?

• The point at which a material breaks permanently.

• The maximum extent to which a solid can be stretched without permanent deformation.

• The minimum force required to deform a solid.

• The range of temperatures a material can withstand before melting.

How does thickness affect the strength of an object during a collision?

• Thicker objects generally can withstand greater forces without deforming.

• Thicker objects are always lighter and easier to handle.

• Thicker objects are more likely to break upon impact.

• Thickness has no effect on the strength of an object.

What factors influence how much a solid object deforms for a given force?

• Material, Shape and Thickness

• Color, Size and Weight

• Temperature, Pressure and Volume

• Density, Elasticity and Hardness

How does an increase in the speed or mass of a moving object affect the peak forces applied during a collision?

• It decreases the peak force.

• It has no effect on the peak force.

• It increases the peak force.

• It only affects the duration of the collision.

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NGSS.MS-PS2-2

What is the role of friction in contact forces?

• Friction increases the speed of moving objects.

• Friction opposes the motion of objects in contact.

• Friction has no effect on motion.

• Friction only acts on stationary objects.

What is peak force in the context of collisions?

• The average force experienced during a collision.

• The maximum force experienced during a collision.

• The minimum force experienced during a collision.

• The force experienced just before a collision.

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NGSS.MS-PS2-1

What is a collision?

• An event where two or more bodies exert forces on each other for a relatively short time.

• A situation where objects move in parallel without interaction.

• A process where bodies come to a complete stop after contact.

• An occurrence where bodies are attracted to each other indefinitely.

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NGSS.MS-PS2-1

What is the significance of shape in determining how an object behaves during a collision?

• The shape determines the color of the object.

• The shape affects how forces are distributed and can influence damage.

• The shape has no effect on the object's behavior during a collision.

• The shape only matters for aesthetic purposes.

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