The speed of a cyclist reduced uniformly from 2.5m/s to 1.0m/s in 12s . a) calculate the deceleration of the cyclist
b) calculate the distance covered
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Explanation:
given intial velocity u=2.5m/s
finial velocity v=1 m/s
time t=12 s
determine deaacrlartion as shown below
v=u+a*t
a=(v-u) /t
a=1-2.5/12
a=-1.5/12
a=-.125 m/(s) ^2 (ans)...
s=u*t+(1/2)a*(t)^2
=2.5*12+(.5*-.125*((12)^2)
=30-9
=21 m (ans) ...
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