Potential and kinetic energy review

As the kinetic energy (KE) of an object increases

• the potential energy (PE) also increases

• the potential energy (PE) is not affected

• the potential energy (PE) decreases

• the potential energy (PE) stays the same

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

 The higher the object is held before it falls, the:

• greater the gravitational potential energy (GPE)

• greater the kinetic energy (KE) that is stored

• less gravitational potential energy (GPE) is stored

• less kinetic energy (KE) there will be when it falls

Tags

NGSS.MS-PS3-2

 The amount of gravitational potential energy (GPE) depends on:

• the amount of KE it stored

• the way you hold the object before it falls

• how fast the object moves when you release it

• the height (position) of the object before it falls

Tags

NGSS.MS-PS3-2

 Two baseballs are dropped at the same time.  Baseball A is dropped off a 3 meter high shelf.  Baseball B is dropped off a 6 meter high shelf.  What CONCLUSION can be made from this information?

• the objects will hit the ground at the same time

• object A will have LESS KE than object A

  B just before it hits the ground

• object A will have MORE KE than object B just before it hits the ground

• both objects have the SAME amount of KE when dropped

 As an object is falling, what energy transformation is taking place?

• potential energy into kinetic energy

• kinetic energy into potential energy

• sound energy into potential energy

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

 ​At which point in the ride will the car have the most KE?

• location A

• location B

• location C

• location D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

​At which point is the KE about at 50% and still increasing?

• location A

• location B

• location D

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Is the GPE of a falling object increasing or decreasing the closer it gets to the floor?

• increasing

• decreasing

• stays the same

Tags

NGSS.MS-PS3-2

 As Wilie Coyote falls off of a cliff towards the ground, at what point during his fall is his KE energy and the PE energy about equal (50% and 50%)?

• at the highest point

• at the very bottom

• about halfway down the cliff

Tags

NGSS.MS-PS3-5

Choose the position of the roller coaster car (a,b,c or d) that best illustrates the greatest amount of gravitational potential energy (GPE).

• position A

• position B

• position C

• position D

Tags

NGSS.MS-PS3-2