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a car takes 10 mins to go from A to B, 10km away, it stops for 10 mins to have a flat tyre changed. it then goes from B to C, a further 15km, in yet to another 20 mins. what was the change in speed?​

Respuesta :

namtotbung

Answer:

[tex]\Delta v = 15 km/h[/tex]

Explanation:

[tex]v_{1} = \frac{10}{\frac{1}{6} } = 60 km/h\\ v_{2} = \frac{15}{\frac{1}{3} } = 45 km/h\\\\ \Delta v = v_{1} - v_{2} = 15 km/h[/tex]

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