STEM
Physics, step by step
Physics solutions start from the right principle, set out the known quantities with units and carry the units through every calculation.
Coverage
Topics we cover
- Kinematics and dynamics
- Work, energy and power
- Electricity and circuits
- Waves and optics
- Thermodynamics
- Modern physics
Worked example
PhysicsSolved
Question
A 2 kg mass accelerates at 3 m/s². What is the net force?
- Step 1: Apply Newton's second law: F = m · a
- Step 2: Substitute the values: F = 2 kg × 3 m/s²
- Step 3: Multiply and keep the units: 6 kg·m/s²
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