Work and Energy Quiz

Work is measured in ________________.

• m/s

• Newtons

• Joules

• meters

Tags

NGSS.MS-PS3-5

The formula for work is ___________.

• F-d

• F+d

• Fd

• F/d

You push a box 10m across the floor with a force of 80N.  How much work is done? 

• 80J

• 90J

• 800J

• 70J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Two movers move identical 40N boxes to the second floor of an apartment building. One takes Staircase A and one travels an equal distance up Staircase B.  Do they do the same amount of work?  Why or why not?

• Yes, because they are going the same distance and using the same force.

• No, because they are lifting identical boxes but going up different staircases.

• Yes, because they use the same force to lift the boxes.

• Yes, because they are going the same distance.

The fundamental property of matter that may be identified as positive or negative is called _______________.

• mass

• gravitation force

• magnetism

• electric charge

Tags

NGSS.MS-PS2-3

Carmen combs her hair, her comb acquires electrons from her hair.  The net charge on her hair becomes ___________________.

• negative

• zero

• neutral

• positive

You walk across the carpet and pick up extra electrons, which have a _____________ charge.

• neutral

• negative

• positive

• zero

Tags

NGSS.MS-PS2-5

Electric field lines provide a picture of electric fields.  They go from ____________ charges towards ________________ charges.

• positive; negative

• positive; positive

• negative; neutral

• negative; positive