Question

a certain car is capable of accelerating at a rate of 0.60 m/s^2. How long does it take for this car to go from a speed of 55mi/h to a speed of 60 mi/h?

Answer 1

use conversion
a=0.6m/s^2 X 3.28ft/m=1.968 ft/s^2
V0=55X5280/3600 =80.67 FT/SEC
V1=50X5280/3600=88 FT/SEC
now use the formula
at=v1-v0
t=(88-80.67)/1.968
t=3.72 sec .....ans