The question just basically explained what happens
If it starts at rest the initial velocity is 0.
For an acceleration, a, and time, t, the velocity is v=at. Since at t=4, v=7, then a=7/4=1.75m/s^2
For the answer to the question above
Forecasting how a business might do in the future.
Calculating tax.
Doing basic payrolls.
Calculating Revenues.
Producing charts.
--Going past 5--
Inventory tracking
Very (VERY) basic CRM for small businesses
I hope my answer helped you.
