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January 30, 2015

January 30, 2015

Posted by **ashley** on Tuesday, September 6, 2011 at 9:45pm.

Simpson drives his car with an average veloc-

ity of 47.5 km/h to the east.

How long will it take him to drive 137 km

on a straight highway?

Answer in units of h

part 2

How much time would Simpson save by in-

creasing his average velocity to 105 km/h to

the east?

Answer in units of min

- physics -
**Henry**, Friday, September 9, 2011 at 2:19pm1. d = Vt,

t = d / V = 137 / 47.5 = 2.88h.

2. t = 137 / 105 = 1.3h.

Ts=2.88 - 1.3 = 1.58h = 94.5min. = Time saved.

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