Answer to Question #103191 in Mechanics | Relativity for SARUUL

Question #103191
Average Vector Speed, Truck You stopped 8.4km while driving, moving 8.4km at a speed of 70km / h and stopped short of fuel. You left the vehicle and walked 30 minutes to the gas station 2.0 km away.
1
(a) Find the total transition from moving the truck to the gas station? (b) Find the interval Dr for the first time you move the truck to the gas station?
1
Expert's answer
2020-02-18T09:48:13-0500

a)


s=8.4+2=10.4 kms=8.4+2=10.4\ km

b)


T=8.470+0.5=0.62 h=37.2 minT=\frac{8.4}{70}+0.5=0.62\ h=37.2\ min

Average speed is


v=10.40.62=16.8kmhv=\frac{10.4}{0.62}=16.8\frac{km}{h}


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