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July 28, 2015

Homework Help: physics

Posted by Jon on Thursday, September 23, 2010 at 7:23pm.

1.
A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 81 km/hr in 10 seconds. What is the speed after the first 7 seconds of acceleration?
A) 157.5 m/s
B) 22.5 m/s
C) 56.7 m/s
D) 15.8 m/s
E) 32.1 m/s

Obviously, first convert to m/s.

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