7.1 Work & Power

What is needed to calculate work?

• time

• speed

• force

• distance

• acceleration

A person is pushing on a wall. Is this an example of work?

• Yes

• No

Tags

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What is the unit of measurement for work?

• meters

• newtons

• m/s

• Joules

A person is pushing a crate up a ramp. Is this an example of work?

• Yes

• No!

Tags

NGSS.HS-PS3-1

You have to push with 15 N of force to move an object 10 meters. How much work do you do?

• 15 Joules

• 150 Joules

• 1.5 Joules

• .67 Joules

Tags

NGSS.HS-PS3-1

500 J of work is done by a person who uses a force of 50N to move a box, how far does it go?

• 10 m

• 0.1 m

• 25,000 m

• 10 J

Newtons are the unit for _____________.

• Work

• Distance

• Acceleration

• Force

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A push or a pull

• Work

• Force

• Acceleration

• Speed

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-3

For work to be done on an object, the direction and force have to be going the same direction.

• True

• False

_____________ is the rate of doing work.

• Conservation of energy

• Joules

• Energy

• Power