The drivers of two cars having equal speeds hit their brakes at the same time, but car A has two times the acceleration as car B. A. If car A travels a distance D before stopping, how far (in terms of D) will car B go before stopping?
B. If car B stops in time T, how long (in terms of T) will it take for car A to stop?

diagram is missing, but i will try to explain your doubt.

answer:

amplitude is the maximum displacement or distance moved on a point of a vibrating body or wave measured from its equilibrium position.it is equal to half the length of vibration path.

explanation:

newton's third law, for every action there is an equal and opposite reaction.

answer: option c.

explanation:

just took the test its not "d"