# Physics

A car traveling 60km/hr accelerates at the rate of 2.0m/s2. How much time is required for the car to reach a speed of 90km/hr?

can u help me with this? With solutions

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1. V = Vo + a*t.
Vo = 60,000m/3600s = 16.7 m/s.
V = 90,000/3600s. = 25 m/s.
t = ?.

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2. V = Vo + a*t.
Vo = 60,000m/3600s = 16.7 m/s.
V = 90,000/3600s. = 25 m/s.
t =
a=(v-u)/t
2=(25-16.7)/t
2=(8.30)/t
t=(8.3/2)
t=4.15

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3. it can be rounded off to 4.2

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