Posted by **miranda** on Tuesday, October 23, 2012 at 9:24pm.

A supersonic jet flying at 137 m/s is accelerated uniformly at the rate of 23.1 m/s2 for 20.0 s.

(a) What is its final velocity?

(b) The speed of sound in air is 331 m/s. How many times the speed of sound is the plane's final speed?

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