Question

a car travelling at 7.0m/s acceleraes uniformly at 2.5 m/s square to reach a speed off 12.0 m/s. how long does it takes for this accelerataion to occur

Answer 1

2.5 seconds.

Answer 2

Check it out... http://answers.yahoo.com/question/index?qid=20100831184805AAwWl2E

Answer 3

Soooo

Answer 4

\[\Large a={v-u \over t}\]

u= initial velocity ...
v= final velocity

\[\Large \implies t= {v-u \over a}\]