Intro to forces

Front

What are noncontact forces?

Back

Forces that do not require objects to touch each other to exert an influence, such as gravitational force, magnetic force, and electric force.

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NGSS.MS-PS2-3

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Front

What force causes a thrown baseball to accelerate downward?

Back

Gravitational force.

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NGSS.MS-PS2-4

Front

How does an unbalanced force affect an object's motion?

Back

An unbalanced force results in a net force that isn't zero, causing the object to accelerate in the direction of the net force.

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NGSS.MS-PS2-2

Front

What is the definition of friction?

Back

Friction is a force that opposes the relative motion of two surfaces in contact.

Front

In which situation is low friction advantageous?

Back

When a hockey puck slides toward the goal, low friction allows it to travel faster and further.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces result in a net force of zero, causing no change in motion, while unbalanced forces result in a net force that causes acceleration.

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NGSS.MS-PS2-2

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, causing objects to be pulled toward each other.

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NGSS.MS-PS2-4

Front

What is net force?

Back

Net force is the vector sum of all the forces acting on an object.

Tags

NGSS.MS-PS2-2

Front

How do you determine the direction of motion when multiple forces are acting on an object?

Back

The object will move in the direction of the net force, which is the vector sum of all acting forces.

Tags

NGSS.MS-PS2-2

Front

What is the role of friction in motion?

Back

Friction opposes motion, slowing down or stopping moving objects.