Force and Motion

The energy of a pendulum is recorded at different positions in the table. Use the data in the table to determine the amount of kinetic energy the pendulum had at Position 2.

• 36.55 J

• 63.45 J

• 27.74 J

• 100 J

Tags

NGSS.MS-PS3-1

Which of the following best represents potential energy?

• Air leaking rapidly from a car tire.

• A marble sitting at the top of a ramp.

• Heat radiating from a large forest fire.

• Water flowing through a rubber hose.

Tags

NGSS.MS-PS3-2

As a boulder rolls from the top of a hill to the bottom, how does its potential and kinetic energy change?

• Potential and kinetic energy both increase.

• Potential increases and kinetic decreases.

• Potential decreases and kinetic increases.

• Potential and kinetic energy both decrease.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

Students are investigating changes from potential to kinetic by rolling a marble down a ramp made by propping up a plastic ruler on a book and letting it roll down. Which of the following will change the potential energy the marble starts with?

• Switching the plastic ruler with a wooden one.

• Adding more books beneath the ruler,.

• Pushing the marble down the ramp.

• Replace the marble with a rock.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

Which of the following best shows a change from potential to kinetic energy?

• Water flowing over a tall cliff.

• A rubber band being stretched.

• Electricity making a bulb light up.

• A stone on top of a mountain.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A truck is parked at the bottom of a hill. It moves from the bottom of a hill and parks at the top. Compared to when it was parked at the bottom of the hill at its new position, the tuck now has _____________.

• more potential energy.

• more kinetic energy.

• less potential energy.

• less kinetic energy.

Tags

NGSS.MS-PS3-2

The illustration shows a roller coaster and indicates four different positions the car might be at as it moves along the track. At which point in the roller coaster's journey is its potential energy the greatest?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS3-2

Potential energy and kinetic energy are similar in that both________

• are demonstrated when an object is at rest.

• depend on the height of an object above the ground.

• can each be converted into the other form.

• will produce an increase in the mass of an object.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

At which point does the pendulum have the most kinetic energy?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

A box and forces shown below. A box rest motionless on the ground. One student is pushing the box to the right with a force of 2 Newtons. The other student is pushing to the left with a force of 5 Newtons. In which direction and with what type of speed will the box move?

• It will move left at a constant speed.

• It will move left at an increasing speed.

• It will move right at a constant speed.

• It will move right at an increasing speed.

Tags

NGSS.MS-PS2-2