Newton's Laws of Gravity

Observe the motion of the washer as the notecard is pulled quickly out from under it. Which of Newton's Laws does this represent?

Observar el movimiento de la moneda mientras saca rápidamente el papel de debajo. ¿Cuál de las leyes de Newton representa esto?

• Newton's 1st Law, inertia

• Newton's 2nd Law, Force = m x a

• Newton's 3rd Law, action/reaction

Answer explanation

Because of inertia, the washer will drop down into the cup as the card is pulled away. When the card is moved the object wants to stay at rest, until gravity acts, pulling it straight down.

What is Newton's 2nd law of motion?

• Inertia

• Force= Mass multiplied by acceleration

• For every action there is a equal and opposite re-action.

• Law of gravity

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When the teacher rearranges the desks in the classroom, she must apply ____________ to push and pull the desks around.

• acceleration

• force

• weight

• magnets

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NGSS.3-PS2-1

The amount of gravity pushing down on an object

• force

• weight

• mass

• gravity

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NGSS.HS-PS2-4

Who was the scientist that created the laws of motion?

• Alfred Wegener

• Isaac Newton

• Albert Einstein

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NGSS.MS-PS2-2

What is Newton's third law?

• For every action there is a reaction

• reactions happen before actions

• Gravity does not play a role in reactions

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As the distance between two objects increases, the pull of gravity...

• Increases

• Decreases

• Stays the same

Which of the following will not change in different gravitational fields?

• wieght

• force

• mass

• pounds

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NGSS.MS-PS2-4

As the mass of an object increases, the pull of gravity...

• Increases

• Decreases

• Stays the same

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What is Newton's first law?

• An object in motion stays in motion unless acted by an unbalanced for

• An object at rest stays at rest unless acted by an unbalanced force

• unbalanced forces do not change motion