Mechanical Energy

Energy due to motion is ____________ energy.

• thermal

• sound

• kinetic

• potential

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

The faster the object moves, the _______ kinetic energy it has.

• less

• more

• equal

• none of the above

Tags

NGSS.MS-PS3-1

At which point is the potential energy the greatest?

• W

• X

• Y

• Z

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NGSS.MS-PS3-2

A 0.5 kilogram bird is flying at a constant speed of 8.0 m/s. What is the bird's kinetic energy?

• 14 J

• 15 J

• 16 J

• 17 J

Tags

NGSS.MS-PS3-1

A 2000 kilogram car is moving at a speed of 20 m/s. How much kinetic energy does the car have?

• 200.000 J

• 400.000 J

• 600.000 J

• 800.000 J

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The diagram shows a diver’s motion from the top of a high diving board into a pool of water. At what point does the diver have the greatest kinetic energy and the least potential energy?

• 1

• 2

• 3

• 4

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

A 50 kg person walks from the ground to the roof of a 70 m tall building. How much gravitational potential energy does he have at the top of the building? (g = 10 N/kg)

• 35.000 J

• 30.000 J

• 17.500 J

• 15.000 J

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NGSS.MS-PS3-2

Energy and Work are measured in ______

• Kilograms

• Newton

• Joules

• m/s

How can I gain potential energy? (choose 2 answers)

• Run a mile

• Climb a mountain

• Walk up the stairs

• Go down the stairs

Tags

NGSS.MS-PS3-2

How can we increase the gravitational potential energy of the car?

• Take the interior out of the car so that the car has less mass.

• Strap a boulder to the car so that it weighs more.

• Keep the length of the hill at 50 m but only 5 m tall.

• Keep the hill at 10 m tall but increase the length of the hill so that the car has farther to roll.

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-4