Question

How long will it take a car to acceleration from 15.2ms to 23.Ms if the car has an average acceleration of 3.2m\s

Answer 1

Answer: 2.43 s

Step-by-step explanation:

Initial velocity is
`u=15.2\ m/s`

Final velocity
`v=23\ m/s`

Average acceleration is
`a_(avg)=3.2\ m/s`

Average acceleration is change in velocity in the given amount of time

`\therefore a_(avg)=(v-u)/(t)\\\\\Rightarrow 3.2=(23-15.2)/(t)\\\\\Rightarrow t=(7.8)/(3.2)\\\\\Rightarrow t=2.43\ s`

Thus, 2.43 s is required to acquire that average acceleration with 23 m/s velocity .