Forces & Newton's Laws

What direction is the ball going to move?

• Left ( ← )

• Right ( → )

• It will not move

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

The robot is pushing the box up a ramp. What force does the "green" arrow represent in the force diagram.

• friction

• gravity

• push (contact force)

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

The robot is pushing a box up a ramp. What does the "red" arrow in the force diagram represent?

• friction

• gravity

• push (contact force)

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The robot is pushing a box up a ramp. What does the "orange" arrow represent in the force diagram?

• friction

• gravity

• push (contact force)

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NGSS.MS-PS2-2

The frictional force is 50N. How much force does the man need to exert to move the box?

• 25 N

• 40 N

• More than 50 N

• Less than 50 N

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NGSS.MS-PS2-2

How do parachutes slow down sky divers?

• parachutes decrease (↓) the gravitational force

• parachutes increase (↑) the fluid friction

• parachutes decrease (↓) the fluid friction

• parachutes increase (↑) the mass of the skydiver

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NGSS.MS-PS3-5

Why is it easier to slip on ice than on dirt?

• Ice has HIGH friction

• Ice has LOW friction

• Ice is cold

• Ice has HIGH gravity

When you throw a ball up, why does it come back down?

• air pressure pushes it back down

• no forces are acting on it

• gravitational force pulls it down

• the ball runs out of force

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

Which law states that "Every action has an equal and opposite reaction"?

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

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NGSS.MS-PS2-1

Which of these will INCREASE ( ↑ ) momentum?

• Increasing (↑) velocity

• Decreasing (↓) velocity

• Decreasing (↓) mass