Experiment Design
Motion & Forces
Momentum & Mechanical Energy
Thermal Physics
Electricity
100

What is the independent variable in an experiment?

Variable changed on purpose

100

Define acceleration.

Rate of change of velocity

100

What is the formula for momentum?

Mass × velocity

100

What is thermal energy?

Heat energy (total kinetic energy of thermal motion of particles and potential energy of their intermolecular interactions). 

100

What is the formula linking voltage, current and resistance? How is it called?

V = IR, Ohm's Law

200

Name two control variables in a simple pendulum experiment.

String length, mass, angle

200

State Newton’s First Law.

Objects stay at rest/motion unless force acts

200

A 2 kg object moves at 3 m/s. What is its momentum?

6 kg·m/s

200

Name the three types of heat transfer.

Conduction, convection, radiation

200

What is the current in a 6 Ω resistor if 12 V is applied?

 I = 2 A

300

Why is it important to take multiple measurements?

To increase reliability & reduce random error

300

What two forces act on a falling object?

Weight (gravity) & air resistance

300

State the law of conservation of momentum.

Total momentum before = after if no external forces act on object

300

What is specific heat capacity?

Energy to change temp of 1 kg by 1°C

300

A 60 W bulb is connected to a 230 V supply. What is the current?

I = P/V = 0.26 A

400

What does a non-linear graph tell us about a physical relationship?

The variables are not directly proportional

400

A ball is thrown upward at 15 m/s. How long until it reaches its highest point? (g = 10 m/s²)

1.5 seconds

400

Two trolleys (mass = 1 kg and 2 kg) collide and stick together. If the first was moving at 6 m/s and the second was stationary, what is their final velocity?

2 m/s

400

2 kg of water is heated from 20°C to 80°C. How much energy is required? (c = 4200 J/kg°C)

Q = 4200×2×60 = 504,000 J

400

Explain why fuses are important in electrical circuits.

Prevent overheating/damage

500

How would you control variables in an experiment investigating how friction affects acceleration on a ramp?

Same surface, same angle, same mass

500

A 5 kg object experiences a net force of 20 N. How far does it travel in 4 seconds from rest?

64 m

500

A 0.5 kg object is dropped from 5 m. Describe change in it's mechanical energy while falling downwards and find it's final speed before hitting the ground? (Ignore air resistance, g = 10 m/s²). 

Kinetic increases, potential decreases, 10 m/s

500

A 0.2 kg block of ice at 0°C melts using 67,000 J of energy. What is the specific latent heat of fusion?

Lf = 67,000 ÷ 0.2 = 335,000 J/kg

500

In a parallel circuit, one bulb goes out. What happens to the others?

They stay lit and be slightly less brighter