CASA Physics Remedial Module 2

How much work is done if you apply a force of 500N to an object and it moves 0.5km?

• 250 J

• 250 kJ

• 250 W

Which statement is correct with regards to optic fibre cable?

• They work on the principle of total internal refraction

• They work on the principle of total internal reflection

• The signal needs boosting every 100m

• They are heavy and therefore not used in aircraft

What is the formula for velocity?

• Velocity = Displacement / Mass

• Velocity = Distance/ Time

• Velocity = Displacement / Time

5000 kJ written as Joules would become:

• 5 J

• 5,000,000 J

• 5000 J

• 0.005 J

Which substance has the highest value of specific heat?

• Copper

• Aluminium

• Water

Use the formula to calculate the distance (s) travelled in 10 seconds if starting velocity was 20m/s and acceleration was 4m/s/s

• 400m

• 200m

• 600m

Which statement is correct about the weight of a liquid displaced by a floating object?

• if it displaces more fluid than its weight, it sinks

• if it displaces more fluid than its weight, it floats

• object weighs twice as much submerged, if SG was 0.5

Conduction is heat transfer via

• contact

• emission

• fluid currents

What are two types of momentum?

• Simple/Harmonic

• Impulse/Angular

• Linear/Angular

What happens to centrifugal force when RPM doubles?

• 2x

• 4x

• 3x