§-Quick questions
VICSpecialist MathematicsUnit 4: Mechanics
Quick questions on Mechanics forces and Newton's laws: VCE Specialist Mathematics Unit 4
7short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is first law?Show answer
A particle continues at rest or in uniform straight-line motion unless a non-zero resultant force acts. This defines the natural state and identifies acceleration as the signature of a net force.
What is second law?Show answer
The resultant force on a particle equals its mass times its acceleration:
What is third law?Show answer
When body A exerts a force on body B, body B exerts an equal and opposite force on A. These act on different bodies, so they do not cancel on a single particle.
What is wrong direction for friction?Show answer
Friction opposes motion (or impending motion). For a block sliding down, friction acts up the slope.
What is q1?Show answer
State Newton's second law as an equation. [1 mark]
What is q2?Show answer
A object has a resultant force of . Find its acceleration. [1 mark]
What is q3?Show answer
Resolve the weight of a block on a incline into components along the slope. [2 marks]
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