FORCE DEMOs & IDEAS

Dropping a book with a piece of paper on top demonstrates

• that paper sticks to books

• that air resistance slows the book down

• the book falls faster than the paper

• the paper & the book fall at the same speed

What did swinging water in a circle demonstrate?

• Gravity turns off sometimes

• water wants to keep doing what it is doing (Inertia)

• water is lighter than air

• gravity is always stronger than other forces

What does the upside down cup demonstrate?

• unbalanced forces

• the vacuum force equals the gravitational force

• water acts like glue

• vacuum force is weaker that gravitational force

What did the pingpong ball above the hair dryer demonstrate?

• magic powers

• how to turn off gravity

• how to balance forces

• how to dry ping pong balls

What did the 2 demonstrations with jug on skateboard show

• Things want to keep doing what they are doing (Inertia)

• Things always want to stay still

• Things always want to keep moving

• Things always want to change what they are doing.

What is the resultant (Net) force if each square is 1 newton (N)

• 1 N up

• 1 N down

• 11 N up

• 11 N down

What is the resultant (Net) force if each square is 1 newton (N)?

• 2 N up

• 2 N down

• 12 newtons up

• 12 newtons down

What is the resultant (Net) force?

• 2 newtons right

• 5 newtons left

• 1 newton right

• 7 newtons left

What is the number of forces & total forces shown?

• 2 forces totaling 1 N

• 3 forces totaling 15 N

• 3 forces totaling 1 right Net

• 1 force totaling 1 right Net

What is the resultant (Net) force?

• 0 Newtons

• 2 Newtons down

• 4 Newtons up

• 10 Newtons