If a vehicle travles with a constant acceleration of 3km/hr for 5 hours, what was its initial velocity if the final velocity was 100km/hr?

Can you please show me how to work this out in math terms.Can you explain it to me.
thank you so much.

1 answer

Do read the earlier two first.

At the end of hour five, which we'll call t5,

speed @t5 = 100 km/h

It's been accelerating at 3km/h, so at 4 hours

speed @t4 = 100 - 3 = 97 km/s

and at 3 hours

speed @t3 = 97 - 3 = 94 km/s

You can work it back from there.