Friday
July 25, 2014

# Homework Help: Physics

Posted by Joy on Thursday, February 13, 2014 at 10:29pm.

Henry is driving to visit his friend Susan. For 126 miles of the trip, he can take the highway, which has a speed limit of 65 miles per hour. Henry is in a rush though, and instead travels at 70.6 miles per hour. How many minutes does he save driving faster?

• Physics - Henry, Saturday, February 15, 2014 at 11:16pm

65 * T1 = 126
T1 = 1.9385 h.

70.6 * T2 = 126
T2 = 126/70.6 = 1.7847 h.

T1-T2=1.9385-1.7847 = 0.1538h=9.23 min.

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