A car moving at a speed of 144 km / h after turning off the engine stops after
| September 3, 2021 | education
A car moving at a speed of 144 km / h after turning off the engine stops after passing a path of 400 meters. with what acceleration it decelerates.
To find the value of the acceleration with which the vehicle was braking, we apply the formula: a = Vн2 / 2S.
Variables: Vн – the speed of the specified vehicle before braking (Vн = 144 km / h = 40 m / s); S – the way to the stop (S = 400 m).
Let’s make a calculation: a = Vn ^ 2 / 2S = 40 ^ 2 / (2 * 400) = 2 m / s2.
Answer: The vehicle was decelerated with an acceleration of 2 m / s2.
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