Pressure

What is the equation used to calculate pressure?

• pressure = force/mass

• pressure = area/force

• pressure = mass/volume

• pressure = force/area

What is the unit of measurement for pressure?

• Pascal

• Newton

• Meter Squared

• Kilogram

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 sneaker exerts more pressure than the high heel as a result of an increase in surface area.

• The bottom of the high heel exerts the same pressure as the bottom of the sneaker.

• The bottom of the high heel exerts more pressure than the sneaker as a result of a decrease in surface area.

• The pressure depends on the weight, not the surface area of the shoe.

How to calculate area (A) using pressure (p) and force (F)?

• A = F x p

• A = F : p

• A = F + p

• A = F - p

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

• 400 N/cm²

• 100 N/cm²

• 40 N/cm²

• 10 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 twice the pressure it did before

• it will exert the same pressure it did before

• it will exert four times the pressure it did before

Army tank tracks are useful for travelling through the mud because ...

• they decrease the force the vehicle exerts on the ground

• they increase the pressure the vehicle exerts on the ground

• they decrease the pressure the vehicle exerts on the ground

• they increase the force the vehicle exerts on the ground

Which of these animals would probably cause the greatest pressure on the ground?

• A fat cow with big feet

• A calf with big feet

• A fat cow with small feet

• A calf with small feet

A shipping container is removed from a ship and placed on the ground. The area of the container in contact with the ground is 16 meter squared. The pressure exerted on the floor is 2480 Pa. What force is being exerted by the shipping container on the ground?

• 39680 N

• 155 N

• 3968 N

• 1550 N