Linda asks…Significant Digits and Vector Arrows 10pts?In one question, I am measuring the reaction distance of a car travelling at 17m/s and it takes 0.8s for a person to react. So, the reaction distance is 17x0.8. However, my issue is that I don't know how many significant digits to use. It is common sense to multiply those numbers, get 13.6 and round up to 14. But 0.8 has only one significant figure, so would I not have to use one significant number?
Second question, a car is travelling at
