Newton's Laws of Motion

Front

What is Newton's first law of motion?

Back

An object will remain at rest or move in a straight line at a constant speed unless acted upon by an external force.

Front

What is Newton's second law of motion?

Back

Force equals mass times acceleration

(F=ma)

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NGSS.MS-PS2-2

Front

What is Newton's third law of motion?

Back

For every action, there is an equal and opposite reaction.

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NGSS.MS-PS2-1

Front

What is a net force and how do you find it?

Back

the net force is the total force acting on an object, found by adding up all forces acting in the same direction and subtracting opposing forces.

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NGSS.MS-PS2-2

Front

What happens to an object's speed if its mass increases while the same force is applied?

Back

The speed decreases because acceleration (a=F/m) is inversely proportional to mass.

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NGSS.MS-PS2-2

Front

What are balanced and unbalanced forces?

Back

Balanced forces cancel each other out, causing no motion. Unbalanced forced result in motion or acceleration.

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NGSS.MS-PS2-2

Front

How do you calculate acceleration?

Back

Acceleration = (final velocity - initial velocity) /time

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Front

What is inertia, and how does it relate to Newton's first law?

Back

Inertia is an objects's resistance to changes in motion. Newton's first law states that inertia keeps an object at rest or in uniform motion.

Front

What is friction, and how does it affect motion?

Back

Friction is resistive force that opposes motion, slowing down moving objects.

Front

How do you calculate momentum?

Back

Momentum = mass x velocity (p=mv)