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//Motorist travelling
//refer fig. 15.5
u=(70*1000)/(60*60) //m/sec
v=0
s=50 //m
//Using equation of linear motion
a=-(19.44^2)/(2*50) //m/sec^2
//again
t=19.44/3.78 //sec
//Applying equilibrium equationswe get
mu=(3.78)/(9.81)
printf("\nt=%.2f sec\nmu=%.3f ",t,mu)
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