Physics
posted by Tammy .
You are driving home on a weekend from school at 65mph for 130 miles. It then starts to snow and you slow to 45 mph. You arrive home after driving 4 hours. How far is your hometown from school?
First I found the time with d/v=t so 130/65= 2 hours
Then I used d= (vv_0)/(tt_0)
=(4565)/(42)
=20mph/2hours
=10 miles
distance can't be negative can it so Would the answer just be 10 miles?

Physics 
bobpursley
Figure the time on each leg (first leg 130mi/65mph, second leg is 4hrs minus first time).
distance = 130mi + timesecondleg*45mph
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