Question

I know this isnt english, but any help appreciated much.
1.The natural laws include the law of (1 point)speed limits.
gravity.
railroad crossings.
yielding.

2. Which of the following should determine whether you need to speed up or slow down? (1 point)how quickly you need to get somewhere
how far above the speed limit you are traveling
location of other vehicles in traffic
time of day

3. Which of the following determines the total stopping distance of a vehicle? (1 point)human-perception time, human-reaction time, and vehicle-stopping time
human-reaction distance, braking