You are driving at $30.0 \mathrm {~m} / \mathrm { s }$ on a freeway curve of radius $25.0 \mathrm {~m}$ What is the magnitude of your acceleration? A) 36.0 m/s² B) 1.20 m/s² C) 20.8 m/s² D) 0.833 m/s²

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Quizplus · Accepted Answer

Centripetal acceleration is given by:$$a_c = \frac{v^2}{r} = \frac{(30.0 \mathrm {~m} / \mathrm { s })^2}{25.0 \mathrm {~m}} = 36.0 \mathrm {~m} / \mathrm { s }^2$$

You Are Driving At 30.0 m/s30.0 \mathrm {~m} / \mathrm { s }30.0 m/s

You Are Driving At $30.0 \mathrm {~m} / \mathrm { s }$