Physics, Fluid Mechanics, Post Assessment, Retake

The unit m³ is a unit of:

• Volume
• Mass
• Density
• Area

Cutting a watermelon in half causes the density of the watermelon to:

• Increase
• Decrease
• Remain constant

The density of water is ____ g/cm³.

• 1
• 1000
• 100
• 10

A g or kg is a unit of:

• Mass
• Volume
• Density
• Area

Standing on one foot causes the pressure on the floor to:

• Increase
• Decrease
• Remain constant

It is "safe" to lay on a bed of nails due to:

• The increased area the nails create
• The increased pressure the nails create
• The smaller area the nails create
• The less force that acts on your body

When dealing with pressure, area, and force have what type of relationship?

• Direct
• Inverse
• No relationship

Which of the following is NOT an example of unites for expressing pressure?

• N/m²
• kg/m²
• atm
• Pa

What is the volume of Object X?

• 10.0 cm³
• 15.0 cm³
• 20.0 cm³
• 25.0 cm³

Tags

CCSS.4.MD.B.4

How would you calculate the force to be used on a brake of area 0.5cm² if the slave cylinder has a 4cm² area and needs 800N to stop the car.

• 4 x 800 x 0.5
• 800/0.5 x 4
• 0.5 x 4 x 800
• 800 x 0.5 /4

Tags

NGSS.HS-PS2-1