← Combined Science syllabus

SingaporeCombined Science

Physics: Measurement, Forces and Energy

4 dot points across 4 inquiry questions. Click any dot point for a focused answer with worked past exam questions where available.

What does a force do to an object, and how are force, mass and acceleration linked?

Describe the effects of forces, distinguish mass from weight, and apply the relationship force equals mass times acceleration to simple situations
A focused N(A)-Level answer on forces. What forces do, the difference between mass and weight, balanced and unbalanced forces, and using F equals m times a in simple calculations.
8 min answer →

How do we measure physical quantities accurately, and why do units matter so much in science?

Describe the SI base quantities and their units, choose suitable instruments to measure length, volume, mass and time, and read those instruments to the correct precision
A focused N(A)-Level answer on measuring physical quantities. SI base units, choosing the right instrument for length, volume, mass and time, and reading scales to the correct precision.
7 min answer →

How do we describe how fast something moves and how its motion changes over time?

Define speed and acceleration, calculate them from distance and time, and interpret distance-time and speed-time graphs
A focused N(A)-Level answer on motion. Defining and calculating speed and acceleration, and reading distance-time and speed-time graphs including gradient and area meaning.
8 min answer →

What do we mean by work, energy and power, and how is energy stored and transferred?

Describe the main stores of energy and the principle of conservation of energy, and calculate work done, kinetic energy, gravitational potential energy and power
A focused N(A)-Level answer on energy. Stores of energy and conservation, plus calculating work done, kinetic and gravitational potential energy, and power with simple numbers.
8 min answer →