Newton and the Laws of Motion

This is any action that will cause an object to change its speed.

• Force

• Velocity

• Mass

• Gravity

Answer explanation

Force is any action that will cause an object to change its speed.

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Which of the following would be an example of the Second Law?

• Need to have cold liquids

• Need to have blankets

• Need to wear seatbelts

• Need to consume foods

Answer explanation

The human body is a mass and when in a vehicle, as the vehicle accelerates a force is placed on the body. Because the acceleration of a vehicle can change suddenly, the amount of force applied to the body would make the body continue forward in acceleration unless a separate force, i.e., a seatbelt, is used to stop that forward momentum. This is an example of the defined relationship between force, acceleration and mass.

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NGSS.MS-LS1-7

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Which of the following would be an example of the First Law?

• A speeding train

• A bike

• Climbing rocks

• A running stream

Answer explanation

Newton’s First Law states that objects will stay at rest until a force is acted upon them. In the answers above, Answers (a), (c) and (d) are referring to motions that are taking place whereas answer (b) is referring to a stationary bike that has no force exerted upon it. Because it is stationary, it is an example that falls under Newton’s First Law.

This is the rate of change through time.

• Velocity

• Force

• Acceleration

• Mass

Answer explanation

Acceleration is the rate of change through time.

Tags

NGSS.MS-PS2-2

Which Law best explains how boats work?

• First Law

• Second Law

• Third Law

• Gravitational Pull

Answer explanation

Objects will remain in a state of rest (no movement) unless and until a force is applied to it. A boat will stay in one place. Once a force is placed upon the boat, such as through engine fuel, the boat will begin to move forward. It will take another force to stop its forward momentum.

The force that is applied to an object is known as _____.

• acceleration

• velocity

• gravity

• inertia

Answer explanation

The force that is applied to an object is known as inertia.

Who is the physicist who determined the laws of motion?

• Galileo

• Albert Einstein

• Leonardo da Vinci

• Isaac Newton

Answer explanation

Sir Isaac Newton is the physicist who determined the laws of motion.

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Why do rocks fall from a cliff?

• Momentum

• Inertia

• Gravity

• Velocity

Answer explanation

.

The correct answer is Momentum

Momentum is “mass in motion.”

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Which of the following would be an example of Newton’s Third Law of Motion?

• Sleeping

• Running

• Playing tag

• Tug of war

Answer explanation

In tug of war two people or teams of people pull on a rope. As one side pulls, the other side pulls back causing an opposite reaction.

Tags

NGSS.MS-PS2-1

An object in motion stays in motion and an object at rest will stay at rest unless an unbalanced force acts upon it. – Inertia, balanced and unbalanced forces, friction

• Newtons 1st Law'

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th law