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VICPhysicsQuick questions
Unit 2: How does physics help us to understand the world?
Quick questions on Motion graphs and acceleration (VCE Physics Unit 2)
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 position-time?Show answer
- Slope = instantaneous velocity. - Horizontal line = stationary. - Straight slope = constant velocity.
What is velocity-time?Show answer
- Slope = instantaneous acceleration. - Area = displacement (with sign). - Horizontal line = constant velocity.
What is acceleration-time?Show answer
- Area = change in velocity $\Delta v$.
What is reading $x$-$t$ slope as displacement?Show answer
Slope is velocity. Displacement is read off the vertical axis.
What is treating area on $x$-$t$ as meaningful?Show answer
Only $v$-$t$ and $a$-$t$ areas matter.
What is ignoring sign?Show answer
Negative area on $v$-$t$ reduces net displacement.
What is confusing straight $v$-$t$ with constant velocity?Show answer
A straight $v$-$t$ line means constant acceleration (zero acceleration if horizontal).
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