Newton's Laws of Motion for 4th Grade

What is inertia?

• Inertia is the force that causes objects to move.

• Inertia is the speed at which an object moves.

• Inertia is the resistance of an object to changes in its state of motion.

• Inertia is the ability of an object to float in water.

Define acceleration.

• Acceleration is the rate of change of speed with respect to distance.

• Acceleration is the rate of change of velocity with respect to time.

• Acceleration is the rate of change of time with respect to velocity.

• Acceleration is the rate of change of position with respect to time.

What is force?

• Force is a unit of measurement

• Force is a type of matter

• Force is a push or pull upon an object resulting from the object's interaction with another object.

• Force is a form of energy

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How is mass defined?

• Mass is defined as the amount of matter in an object.

• Mass is defined as the color of an object.

• Mass is defined as the speed of an object.

• Mass is defined as the temperature of an object.

Explain the concept of friction.

• Friction is the force that repels two surfaces apart.

• Friction is the force that causes objects to move faster.

• Friction is the force that attracts two surfaces together.

• Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact.

Which law of motion states that an object at rest will stay at rest unless acted upon by an external force?

• Law of Gravitation

• Newton's Third Law of Motion

• Newton's First Law of Motion

• Newton's Second Law of Motion

What is the formula to calculate force?

• F = m^2a

• F = ma

• F = mc^2

• F = mv

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How does mass affect an object's inertia?

• Mass has no effect on an object's inertia

• Mass decreases an object's inertia

• Mass increases an object's speed

• Mass affects an object's inertia by directly proportional relationship.

What is the unit of measurement for acceleration?

• km/h

• m

• m/s^2

• kg

How does friction affect the motion of an object?

• Friction changes the color of an object

• Friction accelerates the motion of an object

• Friction has no effect on the motion of an object

• Friction opposes the motion of an object by creating resistance.

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