Force, Work, and Power

Which of the following is having work done on it? (select all that apply)

• grocery bag as you lift it up

• a crane moving dirt

• a person sitting on a bench

• a crate as you push it along the floor

Tags

NGSS.MS-PS3-5

A crane does work of 13,500 J with a force of 5200 N to lift a beam. How far was the beam lifted?

• It was not lifted.

• 10 m

• 2.6 m

• 5 m

Tags

NGSS.MS-PS3-5

NGSS.MS-PS2-2

A 50-kg person runs up the stairs 10 meters high in 2 minutes. Acceleration due to gravity (g) is 9.81 m/s². Determine the power.

• 490.5 W

• 2,452.5 W

• 4,905 W

• 40.875 W

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

Calculate the power required of a 60-kg person climbs a tree 5 meters high in 10 seconds. Acceleration due to gravity is 9.81 m/s².

• 294.3 W

• 588.6 W

• 2,943 W

• 98.1 W

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

If it takes 50 J of work to climb a set of stairs, how fast would you have to climb them to use 5 Watts of power?

• 2 s

• 5 s

• 9 s

• 10 s

Tags

NGSS.MS-PS3-5

NGSS.MS-PS3-4

As distance increases, work ______________

• increases

• decreases

• remains constant

• is not affected

It is done only when a force cause an object to move in the same direction as the force applied to it

• Force

• Work

• Power

• Acceleration

A push or pull and can make an object move.

• Force

• Power

• Acceleration

• Velocity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Do not change the motion of an object and has 0 net force.

• Unbalanced Forces

• Normal Force

• Balanced Forces

• Friction Force

Tags

NGSS.HS-PS2-1

Support force exerted upon an object that is in contact with a stable object

• Stable Force

• Normal Force

• Balanced Force

• Tension Force