Finding rate of speed and distance of travling car

melissashaw

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The question is: A police car was traveling down Ocean Parkway in a high speed chase from jones beach. It was at Jones Beach at exactly 10 pm (t=10) and was at oak beach, 13 miles from jones beach at exactly 10:06 pm. A) how fast was the policed car traveling? B) How far was the police car from jones beach at time t? Am I using the formula s=d/t? s=13/10 = 1.3 miles per min 1.3 x 60 so is speed 78mph? How do I find part B?
 
The question is: A police car was traveling down Ocean Parkway in a high speed chase from jones beach. It was at Jones Beach at exactly 10 pm (t=10) and was at oak beach, 13 miles from jones beach at exactly 10:06 pm. A) how fast was the policed car traveling? B) How far was the police car from jones beach at time t? Am I using the formula s=d/t? s=13/10
This is your error. The "t= 10" (hours) just says that the pursuit started at 10 pm, NOT that it was 10 minutes long. The pursuit pursuit lasted from 10:00 to 10:06 so its length was 6 minutes, not 10.

= 1.3 miles per min 1.3 x 60 so is speed 78mph? How do I find part B?
13/6= 2 1/6 miles per minute. Multiply that by 60.

(Denis' method, using the fact that 6 minutes is 6/60= 1/10 hour, is simpler.)_
 
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