Question

Traveling with a speed of 70 kilometers per hour, a car covered a distance s in t hours. Using a formula, express the dependence of s on t; using the formula, find the distance the car traveled between 3 hours 30 minutes and 5 hours.

Answer 1

If the car is traveling at the constant speed of 70 kilometers per hour, then from 3 hours and 30 minutes to 5 hours, the car has been traveling for (5 - 3.5) = 1.5 hours. We can then multiply this total time by the speed of 70 kilometers per hour, which gives 1.5 hours * 70 kilometers/hour = 105 kilometers.
So the car travels 105 km.