The car increased its speed from 36 km / h to 72 km / h within 5 seconds. Determine vehicle acceleration?
| September 6, 2021 | education
Task data: t (duration of vehicle acceleration) = 5 s; V1 (vehicle speed before acceleration) = 36 km / h (10 m / s); V2 (final speed) = 72 km / h (20 m / s).
The desired acceleration of the car can be expressed from the formula: V2 = V1 + a * t, whence a = (V2 – V1) / t.
Calculation: a = (20 – 10) / 5 = 10/5 = 2 m / s2.
Answer: The car was moving with an acceleration of 2 m / s2.
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