After the start, the racing car acquired a speed of 90 km / h within 10 seconds. how far has he traveled during this time?

Since the car started moving without an initial speed, the distance that it traveled can be calculated using the formula:

S = a * t ^ 2/2, where a is the acceleration of the car (we calculate from the formula V = a * t and a = V / t, where V is the speed that the car acquired during acceleration (V = 90 km / h or 25 m / s)), t is the time of vehicle movement (t = 10 s).

The formula for calculations will take the form:

S = V * t ^ 2 / 2t = V * t / 2.

Let’s calculate:

S = 25 * 10/2 = 125 m.

Answer: The race car covered 125 meters in 10 seconds.