A car traveling in a straight line has a velocity of +5.1 m/s. After an acceleration of 0.65 m/s2 , the car’s velocity is +9.7 m/s. In what time interval did the acceleration occur?

Question

anonymous · Answer

You divide the scenario into two portions. First before it accelerates, and the second after it accelerates.

anonymous · Answer

Dear brother, 
Under motion theorems, the acceleration is equal to change in velocity/time.
So all you have to do is simply replace with the values that you have into this formula and find the time. Rearranging the formula, time= Change in velocity/acceleration. Giving us (9.7-5.1)/0.65, which is equal to 7.08seconds. Hope it did help.