Question

During a race, a sprinter increases from 4.0 m/s to 6.0 m/s over a period of 1.5 s. What is the sprinter’s average acceleration during this period? (10 Points) 1 meter per second squared 1.3 meters per second 2.0 meters per second 1.3 meters per second squared

Answer 1

`a=1.3\ m/s^2`

Step-by-step explanation:

It is given that,

Initial velocity, u = 4 m/s

Final velocity, v = 6 m/s

Time, t = 1.5 s

We need to find the average acceleration of a sprinter during this period. We know that the rate of change of velocity of an object is equal to its acceleration. So,

`a=(v-u)/(t)\\\\a=((6-4)\ m/s)/(1.5\ s)\\\\a=1.33\ m/s^2`

So, the acceleration of the sprinter is
`1.33\ m/s^2`. Hence, the correct option is (d).