A car is traveling north at 15 m/s ten minutes later it is traveling at 70 m/s what is the car s initial velocity what is its acceleration

Answer 1

change in speed over time. So,

(70-15)m/s / 10min = 4.5 m/s/min

Most people feel more comfortable with just two units, so that would be

4.5/m/s/min * 1min/60s = 4.5/60 = 0.075 m/s^2