Force Motion Energy

Below are examples of events happening on Earth. Which example best demonstrates gravitational force?

• a boiling pot of water

• a bag blowing across a yard

• an apple falling from a tree

• a vine growing up the side of a building

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NGSS.MS-PS2-4

NGSS.MS-PS2-5

When the wind blows a kite in the opposite direction, is this balanced or unbalanced?

• yes, unbalanced

• no, unbalanced

• yes, balanced

• neither

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

Calculate the amount of force a bicycle with a mass of 7 kg that is accelerating a 2.45 m/s². Remember, F=(m)(a)

• 17.15 N

• 2.857 N

• 0.35 N

• 42.02 N

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NGSS.MS-PS2-2

Calculate the amount of force a sprinter that has a mass of 72 kg and is accelerating at 8 m/s².

• 576 N

• 9 N

• 0.11 N

• 4608 N

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NGSS.MS-PS2-2

When a roller coaster is at the top of a hill it has

• high potential energy.

• high kinetic energy.

• low potential energy.

• equal amounts of kinetic and potential energy.

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NGSS.MS-PS3-2

This type of energy is also called 'energy of motion'.

• potential

• kinetic

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Is the following example kinetic or potential energy? A diver standing on a diving board BEFORE they jump.

• Kinetic Energy

• Potential Energy

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NGSS.MS-PS3-2

Is the following example kinetic or potential energy? A girl sliding down a slide.

• Kinetic Energy

• Potential Energy

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NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Find the KE of a lawnmower that has a mass of 272 kg and a velocity of 4.5 m/s. Hint, use KE = (0.5)(m)(v²)

• 612 J

• 5508 J

• 2754 J

• 10.125 J

Tags

NGSS.MS-PS3-1

Find the KE of a car that has a mass of 1250 kg and a velocity of 35 m/s. Hint, use KE = (0.5)(m)(v²).

• 765,625 J

• 21,875 J

• 1,531,250 J

• 612.5 J

Tags

NGSS.MS-PS3-1