1. A car acceleratesb from 13 m/s to 25m/s in 6.0 sec (a) what was its accelerat

Question

1. A car acceleratesb from 13 m/s to 25m/s in 6.0 sec (a) what was its acceleration (b) how far did it travel in this acceleration Assume constant acc 2. A light plane must reach and take a speed of 33 m/s (a) how long a runway is needed if the constant accelerationis 30 m/s2 1. A car acceleratesb from 13 m/s to 25m/s in 6.0 sec (a) what was its acceleration (b) how far did it travel in this acceleration Assume constant acc 2. A light plane must reach and take a speed of 33 m/s (a) how long a runway is needed if the constant accelerationis 30 m/s2

Explanation / Answer

1) u=initial velocity=13m/s v=finial velocity=25m/s a=acceleration t=6s a)  a=(v-u)/t=(28-13)/6=2m/s2 b)distance=t(v+u)/2=6(25+13)/2=114m 2) constant acceleration u=0 v=33m/s a=30m/s2 x=runway length x=runway length v=u+at t=33/30=1.1s x=.5at2=.5(30)(1.1)2=18.15m

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