What constant acceleration, in si units, must a car have to go from zero to 60 mph in 10 s ?

2.68 m/s^2 First, convert the speed of 60 mph to m/s. To do this, you first multiply by 1609.34 to get m/h 60 mile/h * 1609.34 m/mile = 96560.4 m / h Then divide by 3600 to get m/s 96560.4 m/h / 3600 s/h = 26.82233 m/s Finally divide by 10 seconds to get the acceleration 26.82233 m/s / 10 s = 2.682233 m/s^2