Question

If the initial velocity of the car in the previous problem (the car accelerates at 5.00 km/hr/s for 3.50 sec) is 22.6 km/hr, what is the final velocity of the car?

17.6 km/hr
27.6 km/hr
40.1 km/hr
18.9 km/hr

Answer 1

Every second, the velocity increases by 5 km/h
so after 3.5 seconds, the increase will be 3.5(5) or 17.5 km/h
but it was already going 22.6 km/h, so .....