# If an object with uniform acceleration (or deceleration) has a speed of #8# #ms^-1# at #t=0# and moves a total of #16# #m# by #t=7#, what was the object's rate of acceleration?

##### 1 Answer

#### Answer:

We can use the formula

#### Explanation:

The total time taken is

(Note that it's sometimes a little confusing: 't = 7' might describe a moment in time, 7 seconds after the start, or it might describe a period of time. In this case it's being used one way in the question and a different way in the answer.)

If the object had continued at the same velocity,