A truck is going from 20 km/h to 59 km/h in .20 hours, has an acceleration of what?
acceleration = (final velocity -initial velocity)/ time
acceleration= changevelocity/time=
39km/hr/.20hr= 200km/hr^2
IT is a correct unit, but most would convert it to m/s^2
To find the acceleration of the truck, we can use the formula:
acceleration = (final velocity - initial velocity) / time
In this case, the initial velocity (u) is 20 km/h, the final velocity (v) is 59 km/h, and the time (t) is 0.20 hours.
Let's substitute the values into the formula:
acceleration = (59 km/h - 20 km/h) / 0.20 hours
Calculating the numerator:
59 km/h - 20 km/h = 39 km/h
Now, let's divide the numerator by the denominator:
acceleration = 39 km/h / 0.20 hours
To simplify the calculation, we need to convert km/h to m/s and hours to seconds. We know that 1 km/h is equal to 0.2778 m/s, and there are 3600 seconds in an hour.
Converting the values:
acceleration = (39 km/h * 0.2778 m/s) / (0.20 hours * 3600 s)
Simplifying further:
acceleration = (39 * 0.2778) / (0.20 * 3600) m/s^2
Calculating the numerator:
39 * 0.2778 = 10.8338
Calculating the denominator:
0.20 * 3600 = 720
Now, let's divide the numerator by the denominator:
acceleration = 10.8338 m/s^2 / 720
Calculating the final result:
acceleration ≈ 0.015 N/kg
Therefore, the acceleration of the truck is approximately 0.015 m/s^2.