Tell whether each function represents exponential growth, exponential decay, or neither. Justify your responses.
During a test by the editors of an auto magazine, the stopping distance s (in metres) of the MacPherson X-2 racing car conformed to the rule
a. Find an expression for the car's velocity v at any time t.
b. What was the car's velocity when the brakes were first applied?
c. What was the car's stopping distance for that particular test? Hint: The stopping time is found by setting v=0.