the stopping distance (ds)of a car after the brakes are applied varies directly as the square of the speed (v). if a car, traveling 100/km/h can stop in 90m, how fast can a car go and still stop in 45m?
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Step-by-step explanation:
Easy method: Calculate the braking distance
Formula: Remove the zero from the speed, multiply the figure by itself and then multiply by 0.4. The figure 0.4 is taken from the fact that the braking distance from 10 km/h in dry road conditions is approximately 0.4 metres.
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