In Speed Study Number 1, we looked at two cars traveling the same distance at different speeds on city streets. Car "A" traveled at a speed of 35 miles per hour. Car "B" traveled at 45 miles per hour. Both cars traveled a distance of 10 miles.
How much sooner did Car "B" arrive at its destination than Car "A"?
a-90 seconds
b-about 5 minutes
c- about 10 minutes

b-about 5 minutes

Step-by-step explanation:

For an object in uniform circular motion (=moving at constant velocity), the time taken to cover a certain distance is given by:

where

d is the distance covered

v is the speed of the object

In this problem we have:

d = 10 miles is the distance covered by both cars

Car A travels at a speed of

So the time it takes is

Car B travels at a speed of

So the time it takes is

So the difference in time is

So, the closest answer is

b-about 5 minutes

ddd

step-by-step explanation: