Question 4 an automobile traveling on a straight, level road at 25 km/hr speeds up to 70 km/hr in 20s. what was the magnitude of the auto's acceleration, in meters per second squared? 62m/sa2 6.2m/s 2 o62m/s 2 062m/sa2

Acceleration an automobile is .

Explanation:

Acceleration is defined as a rate of change of velocity with respect to to change in time.

Given that automobile moving straight in the line changes its speed from 25 km/hr to 70 km.hr in 20 seconds.

Change in velocity = 70 km/hr - 25 km/hr = 45 km/hr

1 km = 1000 m , 1 hour = 3600 seconds

Duration of time = 20 seconds =

Acceleration an automobile:

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