work and Energy

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic

Tags

NGSS.MS-PS3-2

If W=Fd
Then how much work is done if it takes 20N to move a box 10 meters

• 0
• 2
• 20
• 200

In which of the following situations do your arms do work on books?

• holding a heavy stack of books while standing
• carrying a heavy stack of books
• dropping a stack of books onto a table
• picking up a pile of books from the floor

Tags

NGSS.MS-PS2-4

A ball rolling down the hill is an example of ___ energy.

• kinetic
• potential

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

An object weighing 20 N moves horizontally toward the right a distance of 5.0 m. What is the work done on the object by the force of gravity?

• The work done on the object by the force of gravity is 50 J.

• The work done on the object by the force of gravity is zero joules.

• The work done on the object by the force of gravity is 4.0 J.

• The work done on the object by the force of gravity is 0.25 J.

• The work done on the object by the force of gravity is 100 J.

At which point is potential energy greatest?

• W
• X
• Y
• Z

Tags

NGSS.MS-PS3-2

As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 

• Both the potential energy and kinetic energy decrease
• The potential energy decreases while the kinetic energy increases 
• The kinetic energy decreases while the potential energy increases 
• Bothe the potential energy and kinetic energy increase 

Tags

NGSS.MS-PS3-5

Which one of the following is not the unit of energy?

• (a) joule

• (b) newton metre

• (c) kilowatt

• (d) kilowatt hour

Which of the following bodies has the largest

kinetic energy?

• Mass 3M and speed V

• Mass 3M and speed 2V

• Mass 2M and speed 3V

• Mass M and speed 4V

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5