Newton's Second Law

Front

What is Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula: F = ma (Force = mass × acceleration).

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Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

What does acceleration mean?

Back

Acceleration is the rate of change of velocity of an object. It occurs when an object speeds up, slows down, or changes direction.

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NGSS.MS-PS2-2

Front

What is the formula to calculate force?

Back

The formula to calculate force is F = ma, where F is force, m is mass, and a is acceleration.

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NGSS.MS-PS2-2

Front

If a 10 kg object is accelerated at 2 m/s², what is the force applied?

Back

The force applied is 20 N (calculated using F = ma: F = 10 kg × 2 m/s²).

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NGSS.MS-PS2-2

Front

What is mass?

Back

Mass is a measure of the amount of matter in an object, typically measured in kilograms (kg).

Front

What is the relationship between mass and acceleration according to Newton's Second Law?

Back

According to Newton's Second Law, as mass increases, acceleration decreases for a given force. This means that heavier objects require more force to accelerate at the same rate as lighter objects.

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NGSS.MS-PS2-2

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is an example of acceleration?

Back

An example of acceleration is skiing faster when going down a hill.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass. Weight can be calculated using the formula: Weight = mass × gravity.