While driving her new Camaro at 20.0 m/s down a four-lane highway, Jessica comes up behind a slow-moving dump truck and decides to pass in the left-hand lane.

If Jessica can accelerate at a rate of 5.0 m/s^2, how long will it take for her to reach a speed of 30.0 m/s?
plz help asap many thanks :)

Question

While driving her new Camaro at 20.0 m/s down a four-lane highway, Jessica comes up behind a slow-moving dump truck and decides to pass in the left-hand lane. 

If Jessica can accelerate at a rate of 5.0 m/s^2, how long will it take for her to reach a speed of 30.0 m/s? 
plz help asap many thanks :)

anonymous · Answer

So she needs to increase her speed by 10 m/s and each second her speed increases by 5 m/s, so....

anonymous · Answer

use v=u + at where v= final velocity = 30,
                                   u= initial velocity = 20 ,
                                   a= acceleration = 5
find out t ,which is required.....