Pressure

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

• True
• False

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

• 40 N/cm²
• 100 N/cm²
• 400 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 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

Tags

NGSS.MS-PS2-2

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

• True
• False

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

• they decrease the force the vehicle exerts on the ground
• they increase the force the vehicle exerts on the ground
• they decrease the pressure the vehicle exerts on the ground
• they increase the pressure 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 fat cow with small feet
•  A calf with big feet
• A calf with small feet

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Amira puts two books on a table as shown in the diagram. The books are the same size and mass. Which book exerts greater pressure on the table?

• A

• B

A box weighing 10 N is placed on the floor. The box's dimension is 1 m by 2 m by 3 m. What is the maximum pressure that can be exerted on the floor by the box?

• 10 Pa

• 5 Pa

• 3.3 Pa

• 1.7 Pa