Forces in Fluids

The density of water is 1g/mL.  What is the weight of 1L of water?

• 1000 g
• 1g
• 9800 N
• 9.8 N

If a boat displaces 1000 N of water, what is the buoyant force?

• 1000 N
• 9800 N
• 1000 kg
• 9800 kg

In F=ma, what units is mass in?

• Newtons
• Grams
• Kilograms
• N/kg

Which is a unit of force?

• Newton
• Gram
• m/s²
• g/mL

An object will sink in water if its average mass density is 

• Equal to 1g/mL
• Larger than 1g/mL
• Less than 1g/mL
• Density does not matter

A rock at the bottom of the ocean has no buoyant force pushing up on it

• True
• False

Bernoulli's principle says that if a fluid's speed increases, its pressure will 

• Decrease
• Increase
• Not be affected

Due to Bernoulli's principle, the pressure is ____ above an airplane's wing than below it.

• Lower
• Higher

Pressure is measured in 

• Pascals
• Newtons
• Meters squared
• Pounds per cubic meter

Force divided by area is 

• Pressure
• Buoyant force
• Hydraulic multiplication
• Fluid