Energy, Motion, Force, and Work Review

What is the definition of energy? A) Ability to do work or cause change B) A push or a pull on an object C) The rate at which work is done D) Energy of motion.

• Ability to do work or cause change

• A push or a pull on an object

• The rate at which work is done

• Energy of motion

Tags

NGSS.MS-PS3-4

How much work is done when a force of 85 N is applied over a distance of 3 meters?

• 255 J

• 85 J

• 3 J

• 170 J

Tags

NGSS.HS-PS2-4

Define force.

• A) A push or a pull on an object

• B) Energy of motion

• C) The rate at which work is done

• D) Ability to do work or cause change.

What is the definition of power? A) The rate at which work is done B) A push or a pull on an object C) Ability to do work or cause change D) Energy of motion.

• The rate at which work is done

• A push or a pull on an object

• Ability to do work or cause change

• Energy of motion.

Calculate the power used when a force of 900 N moves a load 30 meters in 15 seconds.

• 1,800 J

• 900 J

• 30 J

• 15 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Define kinetic energy.

• Energy of motion

• Ability to do work or cause change

• A push or a pull on an object

• The rate at which work is done.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

If a woman carries a cat 3 meters with a force of 85 N, how much work is done?

• A) 255 J

• B) 170 J

• C) 85 J

• D) 3 J

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Hannah is using a machine to lift a box. Which formula represents the power used by the machine? A) Power = Force x distance / time B) Power = Force + distance C) Power = Force - distance D) Power = Force x time.

• Power = Force x distance / time

• Power = Force + distance

• Power = Force - distance

• Power = Force x time

What happens to an object when a force is exerted on it?

• It changes its motion in the same direction

• It remains stationary

• It moves in the opposite direction

• It stops moving.

Tags

NGSS.MS-PS2-2

What is the relationship between force, distance, and work?

• Work = Force x Distance

• Work = Force + Distance

• Work = Force / Distance

• Work = Distance - Force