What is the acceleration of a car moving at a speed of 72 km / h if after 20 s it becomes?
| March 15, 2021 | education
Task data: V1 (speed of a given vehicle before braking) = 72 km / h (in SI V1 = 20 m / s); t (time taken to a complete stop) = 20 s.
The acceleration of a given vehicle during braking is calculated by the formula: a = (V2 – V1) / t.
Calculation: a = (0 – 20) / 20 = -1 m / s2 (a <o in slow motion).
Answer: When braking, the acceleration of a given vehicle was -1 m / s2.
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