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).

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object. It is measured in meters per second squared (m/s²).

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Front

What is net force?

Back

Net force is the total force acting on an object after all the individual forces are combined. It determines the object's acceleration.

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NGSS.MS-PS2-2

Front

If an object is moving at a constant velocity, what is its acceleration?

Back

0 m/s². An object moving at a constant velocity has no change in speed or direction, hence no acceleration.

Front

How do you calculate force using mass and acceleration?

Back

Force can be calculated using the formula F = ma, where F is force, m is mass, and a is acceleration.

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

If a 2 kg object is accelerated at 6 m/s², what is the force applied?

Back

12 N (calculated using F = ma: F = 2 kg × 6 m/s²).

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NGSS.MS-PS2-2

Front

What happens to the acceleration of an object if the mass increases while the net force remains constant?

Back

The acceleration decreases. According to Newton's Second Law, if mass increases and force remains constant, acceleration must decrease.

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NGSS.MS-PS2-2

Front

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

Back

Mass and acceleration are inversely related; as mass increases, acceleration decreases for a constant force.

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NGSS.MS-PS2-2

Front

What is the effect of balanced forces on an object?

Back

Balanced forces result in no change in motion; the object remains at rest or continues to move at a constant velocity.