Newton's 1st Law

What is the definition of force as mentioned in the learning material?

• The resistance to motion

• The cause of motion (what causes objects to move)

• The measurement of speed

• The effect of gravity on an object

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NGSS.MS-PS2-1

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According to the learning material, how many types of forces are there and what are they?

• Three types: pushes, pulls, and twists

• One type: pushes

• Two types: pushes and pulls

• Four types: pushes, pulls, lifts, and drops

What is the SI unit of force?

• Joule

• Pascal

• Newton

• Watt

What is the symbol for the SI unit of force?

• F

• N

• kg

• m/s^2

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NGSS.MS-PS2-2

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Which instrument is commonly used to measure force?

• Barometer

• Thermometer

• Spring scale

• Stopwatch

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What happens when forces acting on an object are balanced?

• A) There is motion

• B) There is a net force

• C) There is no motion

• D) The object changes shape

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NGSS.MS-PS2-2

What is a characteristic of unbalanced forces acting on an object?

• A) All forces are equal

• B) There is no motion

• C) There is motion

• D) The object remains at rest

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NGSS.MS-PS2-2

What does the First Law of motion, also known as the law of inertia, state about an object at rest?

• It will move at a constant velocity unless acted on by a force.

• It will remain at rest unless acted on by a force.

• It will eventually move on its own without any force.

• It will slow down and stop unless acted on by a force.

According to the First Law of motion, what happens to an object in motion?

• It will come to rest eventually on its own.

• It will increase its speed over time without any force.

• It will remain in motion unless acted on by a force.

• It will change direction periodically without any force.

What is mass according to the First Law of motion?

• The force applied on an object

• The amount of matter in an object

• The speed of an object

• The resistance to change in temperature