← 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.

How is energy stored, transferred and conserved, and how do we measure work and power?

State the principle of conservation of energy, describe energy stores and transfers, and apply the equations for work, kinetic and potential energy, power and efficiency
A focused answer to the O-Level Combined Science outcome on energy. Conservation of energy, energy stores and transfers, work done, kinetic and gravitational potential energy, power and efficiency.
9 min answer →

How do forces change the motion of an object, and how do we describe that motion?

Describe speed, velocity and acceleration, interpret distance-time and speed-time graphs, and apply Newton's laws and the equation F = ma to simple situations
A focused answer to the O-Level Combined Science outcome on forces and motion. Speed, velocity and acceleration, motion graphs, Newton's laws, and applying F = ma and weight to simple problems.
9 min answer →

How do turning forces balance, and how does a force spread over an area create pressure?

Define the moment of a force and apply the principle of moments, and define pressure and apply p = F/A including pressure in liquids
A focused answer to the O-Level Combined Science outcome on moments and pressure. The moment of a force, the principle of moments for a balanced beam, pressure as force per area, and pressure in liquids.
8 min answer →

How do we measure physical quantities accurately and express them with the correct units and prefixes?

State the SI base quantities and units, use common prefixes, distinguish scalars and vectors, and select suitable instruments to measure length, time and other quantities
A focused answer to the O-Level Combined Science outcome on measurement. SI base units, prefixes, scalars and vectors, choosing the right instrument, and reading scales without error.
8 min answer →