Att=0 a car has a speed of 30 m/s. att-6 s, its speed is 14 m/s.
what is its average acceleration during this time interval?

The average acceleration during this time interval is

Explanation:

Average acceleration can be measured as the ratio of change in speed to change in time. As the initial speed at initial time is 30 m/s at t = 0 and then at t = 6 s, the speed is decreased to 14 m/s. Then the average acceleration will be

So the average acceleration is negative which indicates that there is deceleration occurrence in the system.

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