Answer:
The acceleration of the car in meters per second squared is 0.868
Explanation:
1. Let's review the information provided to us to answer the question correctly:
Initial velocity = 45 km/h
Final velocity = 70 km/h
Time in which the change occurs = 8 seconds
2. What would be the acceleration of the car in meters per second squared?
Let's use the acceleration formula, this way:
Acceleration = (Final velocity - Initial velocity)/Time
Replacing with the real values, we have:
Acceleration = (70 km/h - 45 km/h)/8 seconds
Acceleration = 25 km/h/8 seconds = 3.125 km/h per second
3. Now we need to convert kilometers per hour per second to meters per second squared, this way:
Let's recall that 1 km/h per second equals to 0.278 meters per second²
Meters per second squared = 3.125 * 0.278
Meters per second squared = 0.868
