a car travels with a constant velocity of 27km/h for 10 min and then decelerates for 10 minutes before coming to rest . Find the total distance traveled by the car
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27km/h=27×1000/60×60=7.5m/s
car travel in minutes =10×60×7.5=4500m=4.5km
u=7.5, t=10×60=600s,v=0
by formula v=u + at
a=-u/t.....a=-0.0124m/s^2
now v^2=u^2+2as
it gives s=u^2/2a
s=2250m=2.25 km
total distance=4.5+2.25=6.75
car travel in minutes =10×60×7.5=4500m=4.5km
u=7.5, t=10×60=600s,v=0
by formula v=u + at
a=-u/t.....a=-0.0124m/s^2
now v^2=u^2+2as
it gives s=u^2/2a
s=2250m=2.25 km
total distance=4.5+2.25=6.75
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0
Explanation:
6.75 is the answer
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