Question

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?

Answer 1

The average acceleration during this time interval is
`-2.67 \mathrm{m} / \mathrm{s}^(2)`

Step-by-step 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

`Average acceleration =(14-30)/(6-0) =-2.67m/s^(2)`

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