When accelerating for 10 seconds, the car acquires a speed of 54 km / h. What is the acceleration of the car?
August 29, 2021 | education
| We consider the movement of the car to be uniformly accelerated (the acceleration of the car is constant).
Vehicle speed can be represented using the formula:
V = V0 + at, where V is the vehicle speed after acceleration (V = 54 km / h = 54 / 3.6 = 15 m / s), V0 is the initial speed (we assume that the car started accelerating from a standstill; V0 = 0 m / s), a – acceleration (m / s2), t – acceleration time (t = 10 s).
Let’s calculate the acceleration:
V = 0 + at = at.
a = V / t = 15/10 = 1.5 m / s2.
Answer: The acceleration of the car during acceleration is 1.5 m / s2.
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