Physics

Pressure can be measured in Pascals (Pa) or Newtons per square metre.
1 Pa = 1N/m2

• True

• False

What is the equation used to calculate pressure?

• pressure= force/mass

• pressure =mass/volume

• pressure=area/force

• pressure=force/area

Which of the statements is true?

• The bottom of the boot exerts more pressure than the shoe as a result of an increase in surface area.

• The bottom of the shoe exerts more pressure than the boot as a result of an decrease in surface area.

• The bottom of the shoe exerts the same pressure as the bottom of the boot.

If a piston has a face of 2cm² and a force of 5N is applied what is the total pressure?

• 2.5N/cm²

• 0.4N/cm²

• 10N/cm²

• 10N/m²

How do you Calculate Pressure

• Force(N)/Area(m²)

• Force(kg)/Area(mi²)

• Area(m²)/Force(N)

Why won't you sink in mud if you wear boots?

• Because the surface area is larger creating less pressure.

• Has air in it to keep you floating.

• Because the mud won't want you.

What is the unit of measurement for pressure?

• pascal

• grams

• milliters

• meters

Pressure decreases when the surface area over which a force is applied increases

• True

• False

Look at the pressure triangle. How do we calculate the area?

• f ÷ a

• f x p

• p x f

• f ÷ p

If the horse reared up on 2 legs what effect would it have on the pressure?

• it will exert half the pressure it did before

• it will exert the same pressure it did before

• it will exert twice the pressure it did before

• it will exert four times the pressure it did before