Lesson 3.1 Energy, Motion, Force, and Work

How is energy defined in science?

• the ability to move or exert force

• the ability to do work or cause change

• how much power something has

• how much charge something has

Tags

NGSS.HS-PS3-2

Does motion always look the same from different perspectives?

• Yes

• No

What is it called when an object's motion is different relative to different objects?

• force

• energy

• work

• relative motion

Pulling on a door is an example of...

• force

• energy

• work

• relative motion

What is the definition of force?

• when an object changes direction

• when an object moves

• a push or pull on an object

• the ability to do work or cause change

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

If an object is moving in a certain direction, does that mean that force is also going in the same direction?

• Yes because force must be going in the same direction for something to move.

• Yes because force and motion always go in the same direction.

• No because force and motion can go in different directions.

• No because force and motion never go in the same direction.

Tags

NGSS.MS-PS2-2

What is the definition of work?

• when force is exerted on an object and causes it to move

• the ability to do work or cause change

• a push or pull on an object

• the amount of work done in a certain amount of time

What two factors affect work?

• force and motion

• work and time

• distance and time

• force and distance

Is work being done if force and motion are going in different directions?

• Yes because the direction of force and motion does not matter for work to be done.

• Yes because force and motion must be going in different directions for work to be done.

• No because force and motion have to be going in completely opposite directions for work to be done.

• No because force and motion must be going in the same direction for work to be done.

Select the scenario in which work is being done.

• when an asteroid floats in space with no force acting on it

• when a waiter carries food

• when a skateboarder coasts on flat ground

• when a rocket takes off