Introduction to Work (Physical Science)

What must happen for work to be done on an object?

• The object must be heavy.

• The object must move as the force is applied in the same direction.

• The object must be at rest.

• The object must be round.

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NGSS.MS-PS3-5

When does work occur?

• When an object is stationary.

• When a force causes an object to move in the direction of the force.

• When a force causes an object to move in the opposite direction of the force.

• When an object is painted.

What is the formula to calculate work?

• W = F + D

• W = D - F

• W = F / D

• W = F * D

In which unit is work expressed?

• Joules

• Kilograms

• Newtons

• Meters

What happens if you try to push a car and it doesn't move?

• Work is being done because you applied force.

• No work is done because there is no movement.

• Work is done because the car is heavy.

• Work is done because you exerted energy.

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NGSS.HS-PS3-1

Something that changes the speed, direction, or shape of another object by pushing or pulling

• force
• motion
• science
• sponge bob

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Forces change the speed, direction or shape by ____________________-

• pushing or pulling
• shoving
• rolling
• jumping

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

A force that stops or slows down objects by (example: rubbing)

• applied force
• frictional force
• electrical force

Work is done when a force causes an object to ...

• move
• stay still
• slow down

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NGSS.MS-PS3-5

How many laws of motion are there?

• 1
• 2
• 3
• 100

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NGSS.MS-PS2-1