Force Dhamaka: Pressure Party Quiz!

What is the force that opposes the motion of an object when it is trying to move across a surface?

• Buoyancy

• Frictional Force

• Gravitational Force

• Centripetal Force

Answer explanation

Frictional force is the force that opposes the motion of an object when it is trying to move across a surface.

If Superman exerts a force of 500 N to stop a speeding car, what is the car's force on Superman?

• Zero, Superman is invincible

• 1000 N, because it's Superman

• The car has no force

• 500 N

Answer explanation

The car exerts a force of 500 N on Superman because of Newton's third law of motion.

If you stood on one foot, compared to standing on both, the pressure on the ground is:

• Higher

• Lower

• The same, you are still standing

• Non-existent

Answer explanation

When standing on one foot, the pressure on the ground is higher compared to standing on both feet.

In a tank 10 meters deep, how would the pressure change with depth?

• The pressure would decrease

• The pressure would increase

• The pressure would remain the same

• The pressure would fluctuate

Answer explanation

The pressure increases with depth in a tank.

According to Pascal's principle, a change in pressure applied to a fluid is transmitted:

• Equally in all directions

• Only to the bottom of the fluid

• Only to the top of the fluid

• Horizontally through the fluid

Answer explanation

According to Pascal's principle, pressure applied to a fluid is transmitted equally in all directions.

Which force can make your hair stand up without touching it?

• Tension Force

• Frictional Force

• Electrostatic Force

• Gravitational Force

Answer explanation

Electrostatic force can make your hair stand up without touching it.

What is the SI unit of force?

• newton (N)

• meter (m)

• kilogram (kg)

• joule (J)

Answer explanation

The SI unit of force is the newton (N).

What instrument is commonly used to measure atmospheric pressure?

• Thermometer

• Hydrometer

• Manometer

• Barometer

Answer explanation

A barometer is commonly used to measure atmospheric pressure. It is the correct choice because it specifically measures air pressure.

You apply a force to a stationary wall. What is the wall's response?

• The wall will disappear

• The wall will start moving towards you

• The wall will exert an equal and opposite force back on you

• The wall will absorb the force and do nothing

Answer explanation

The wall will exert an equal and opposite force back on you

When an object is in free fall, what is the net force acting on it?

• Zero

• Equal to its weight

• Dependent on its mass

• Dependent on its volume

Answer explanation

When an object is in free fall, the net force acting on it is equal to its weight.