Acceleration in meters per square second. A car begins at rest at a stop sign, it accelerates 25m/s over a time of 8.6sec

V = a*t.

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To find the acceleration, we can use the equation:

acceleration (a) = (change in velocity)/(time taken)

Here, the change in velocity is 25 m/s and the time taken is 8.6 seconds.

So, the acceleration is:

a = 25 m/s / 8.6 sec
a ≈ 2.91 m/s²

Therefore, the acceleration of the car is approximately 2.91 meters per square second.

To calculate the acceleration, we can use the formula:

acceleration (a) = (final velocity - initial velocity) / time

In this example, the initial velocity (u) is 0 m/s (since the car begins at rest) and the final velocity (v) is 25 m/s. The time (t) is given as 8.6 seconds.

Plugging these values into the formula, we get:

a = (25 m/s - 0 m/s) / 8.6 s

Simplifying the equation, we have:

a = 25 m/s / 8.6 s

Therefore, the acceleration of the car is approximately 2.906 m/s^2 (meters per square second).