With what acceleration does the car brake if its speed has changed from 18 km / h to 2.5 m / s in 1.25 s?
| September 5, 2021 | education
Problem data: V1 (initial speed of the vehicle in question) = 18 km / h (5 m / s); V2 (final speed) = 2.5 m / s; t (time interval during which the speed decreased) = 1.25 s.
The acceleration with which the vehicle in question brakes is determined by the formula: a = (V2 – V1) / t.
Calculation: a = (2.5 – 5) / 1.25 = -2 m / s2.
Answer: The vehicle acceleration module during braking is 2 m / s2.
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