Force Work Power

A strongman exerts 1500 N on the side of a building. After 2 minutes, the building doesn't move. How much work did he do?

• 180,000 J

• 0 J

• 750 J

• 1500 J

Tags

NGSS.HS-PS2-1

How can you calculate the amount of power used?

• P= W x t

• P= W / t

• P= F / d

• P= F x t

Tags

NGSS.MS-PS3-5

What is the unit of power?

• Newtons

• Watts

• Joules

• Newton-Meter

_______ is a push or a pull that is measured in Newtons.

Tags

NGSS.HS-PS2-1

If I am applying 17 N of force over 3 meters how much work is being done?

• 17N / 3m = 5.67 N /m

• 17N / 3m = 5.67 J

• 17N x 3m = 51 N x m

• 17N x 3m = 51 J

Tags

NGSS.MS-PS3-5

If 51 J of work is being done in 20 seconds, how much power is being done?

• 51J / 20s = 2.55 J/s

• 51J / 20s = 2.55 W

• 51J x 20s = 1020 Jxs

• 51J x 20s = 1020 W

When you apply force to a machine it is called_______.

• output force

• input force

• output distance

• input distance

When the machine applies force to the object its called_______.

• Output force

• Input force

• Output distance

• Input distance

_________ is the measure of the amount of work that can be done in a given amount of time

________ is done when you use force on an object