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Unit 1: Kinematics

Quick questions on Reference frames and relative motion - AP Physics 1 Unit 1

2short 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 q1?
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A swimmer moves at 1.21.2 m/s relative to the water; the water flows at 0.50.5 m/s in the same direction relative to the bank. Calculate the swimmer's velocity relative to the bank. [2 points]
What is q2?
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Two trains move toward each other, one at 2020 m/s and one at 1515 m/s. Calculate their relative velocity of approach. [2 points]

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