Apentix/AP Physics 1/Unit 1: Kinematics/Question

AP Physics 1hardmcq1 pt

A driver moving at 20 m/s sees a red light 40 m ahead and brakes at 4.0 m/s². Which is true?

A.The car stops 10 m past the light

B.The car stops exactly at the light

C.The car stops 10 m before the light

D.The car cannot stop with any braking

Explanation

Core Concept

Stopping distance = v²/(2a) = 400/8 = 50 m, which exceeds the 40 m available by 10 m.

Correct Answer

AThe car stops 10 m past the light

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