Calculating Pressure Physics

Which equation is used to calculate pressure?

• Pressure = Force x Area
  

What is the unit of measurement for pressure?

• Pascal

• grams

• Newton

• meters

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

• True
• False

Which of the statements is true?

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

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

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

What pressure does a 4000 N horse exert on the ground if each foot is 10 cm²?

• 40 N/cm²

• 100 N/cm²

• 400 N/cm²

• 1600 N/cm²

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

Pressure can be measured in Pascals (Pa) or Newtons per square metre.

1 Pa = 1 N/m²

• True

• False

The pressure resulting from a force of 50 N exerted over an area of 5 m² is

• 10 N

• 0.1 N

• 10 Pa

• 0.1 Pa

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

• 2.5 N/cm²

• 0.4 N/cm²

• 10 N/cm²

• 10 N/m²

If a pressure of 100 Pa is applied to a piston with an area of 1.5 m² what is the total force?

• 150 N

• 333 N

• 0.015 N

• 50 N