Kinetic Potential Energy

As an object is lowered into a deep hole in the ground, which of the following assumptions must be made in regard to the object’s potential energy?

• The potential energy increases and then   decreases
• The potential energy increases.
• The potential energy remains constant.
• The potential energy decreases.

Tags

NGSS.MS-PS3-2

If the speed of a moving object is quadruples, the kinetic energy of the object is

•  unchanged 
• increased 16 times 
• tripled 
• quadrupled

Tags

NGSS.MS-PS3-1

Which situation describes a system with decreasing gravitational potential energy? 

• a boy jumping down from a tree limb
• a girl stretching a horizontal spring 
•  a rocket rising vertically from Earth 
• a bicyclist riding up a steep hill 

What happens to the PE of an object if the mass doubles?

• quadruples
• doubles
• unchanged
• triples

A car travels at constant speed up a hill from point A to point B, as shown in the diagram below. As the car travels from A to B, its gravitational potential energy

• remains the same and its KE remains the same
• increases and its KE decreases
• remains the same and its KE decreases 
• increases and its KE remains the same 

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5

The table below lists the mass and speed of each of four objects. Which two objects have the same kinetic energy? 

• D and B 
• D and A
• C and B
• C and A

Tags

NGSS.MS-PS3-1

Which of the following has the greatest gravitational potential energy? 

• 1000 kg rock sitting on the earth
• 1 kg box resting on a shelf  5.2 m above  the earth
• 0.25 kg ball stuck in a tree 5.1 m above  the ground
• 5 kg object on a table 0.5m above the floor

Tags

NGSS.MS-PS2-4

Two vacationers walk out on a horizontal pier as shown in the diagram below. As they approach the end of the pier, their gravitational potential energy will 

• remain the same
• decrease 
• increase and decrease
•  increase 

Tags

NGSS.MS-PS3-2

Which of the following contains the least  gravitational potential energy? 

• an apple lying on the ground
• a softdrink can rolling down a hill during an   earthquake
• an airplane flying overhead
• a rain drop falling from the sky

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-2

 The main difference between kinetic energy and potential energy is that

•  kinetic energy involves position and potential energy involves motion.
•  kinetic energy involves motion and potential energy involves position.
•  although both energies involve motion, only kinetic involves position.
•  although both energies involve position, only potential involves motion