Newton's Law

Which one is balanced?

• top

• bottom

• both

• neither

A 20 kg bike accelerates at 10 m/s².  What was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

The more mass an object has, the _______ force it takes to accelerate it.

• more

• less

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NGSS.MS-PS2-2

Provide an example of Newton's 2nd Law

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NGSS.MS-PS2-2

Provide an example of Newton's 3rd Law

Tags

NGSS.MS-PS2-1

Observe what happens to the motion of the penny. Which of Newton's Laws does this represent? Observe lo que sucede con el movimiento del centavo. ¿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

Newton's 1st Law of inertia causes the penny to stay in place/drop straight down and enables me to catch it right where my elbow used to be.

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.

Watch what happens as Blake releases the balloon. Which of Newton's Laws does this represent? Mira lo que sucede cuando Blake suelta el globo. ¿Cuál de las leyes de Newton representa esto?

• Newton's 1st Law, interia

• Newton's 2nd Law, Force = m x a

• Newton's 3rd Law, action/reaction

Answer explanation

As the air rushes out of the balloon, the balloon is propelled forward. Action = air rushes out Reaction = Balloon shoots forward.

Observe the 2 bottles of paint with a notecard in between. As we attempt to remove the card without disturbing either bottle, which of Newton's Laws does this represent? Observe las 2 botellas de pintura con una tarjeta de notas en el medio. Mientras intentamos quitar la tarjeta sin molestar ninguna botella, ¿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

Inertia causes the bottles of paint to stay in place. No force has acted upon them, so there is not motion.

Watch as Blake pushes the 2 cars of different masses with about the same force. Observe what happens. Which of Newton's Laws does this represent?

Observa cómo Blake empuja los 2 coches de diferentes masas con aproximadamente la misma fuerza. Observa lo que pasa. ¿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

Newton's 2nd Law is the relationship between force, mass and acceleration. The car with less mass travels further when pushed with the same force as the car with more mass.

Tags

NGSS.MS-PS2-2