Briefly describe how a driver can determine the car’s speed relative to the road if…
PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
Briefly describe how a driver can determine the car’s speed relative to the road if the only available information is (i) the speed of a nearby cyclist measured by a roadside camera and (ii) the speed of that same cyclist measured from inside the car. Your answer should name the quantity the driver would calculate and state the basic reasoning in one or two sentences.