Scientific Work

Scientific Work

Force

• A PUSH or PULL

Multiple Choice

What direction is the force happening?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Multiple Choice

What direction is the force happening?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Multiple Choice

What direction is the force happening for the RED parked car?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Multiple Choice

What direction is the force happening for the bag of groceries?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Multiple Choice

What direction is the force happening when the man is hammering the nail?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Multiple Choice

What direction is the force happening for the piano?

• Forward (right)

• Backwards (left)

• Up

• No force is happening

• Down

Work definition

• The amount of force exerted over a distance

• Work = Force x Distance

Work Unit

• Unit = Newton-meters or Joules (J)

Multiple Choice

Which of the following is the correct unit when measuring Work?

• Newtons

• Meters

• Watts

• Joules

Multiple Choice

Calculate work:

Force = 10 N

Distance = 10 m

• 20

• 20 J

• 100

• 100 J

• 0 J

Multiple Choice

Calculate work:

Aaliyah pushed a box with a force of 20N across a floor for 30m.

• 50

• 600J

• 600

• 10 J

• 60 J

Multiple Choice

Calculate work:

Ali lifted a TV to mount on the wall a distance a distance of 2m. He used a force of 400 N.

• 402 J

• 80 J

• 800

• 800 J

• 8000 J

Multiple Choice

Calculate work:

• 975 J

• 650 J

• 1.5 m

• 650 N

• 651.5 J

Multiple Choice

Calculate work:

• 200 J

• 200

• 0 J

• 2000 J

Multiple Choice

Calculate work:

• 50 J

• 0 J

• 500 J

• 10 J

Multiple Select

What has to be true for WORK to be done? Choose 2!

• The object must move

• The Force and Motion are different directions

• The Force and Motion are the same direction

• The object does NOT move

Multiple Choice

Is it work?

• YES

• NO

Multiple Choice

Is it work?

• YES

• NO

Multiple Choice

Is it work?

• YES

• NO

Multiple Choice

Is it work?

• YES

• NO

Multiple Choice

Is it work?

• YES

• NO

Multiple Choice

Is it work? (The rock does not move)

• YES

• NO

Multiple Choice

What is the correct formula for calculating work?

• W = F x m

• W = F x d

• W = J x N

• W = J x m