Find the acceleration for an airliner that takes 20.0 seconds to increase its velocity from a standing start to 80.0 m/s (179 mph) during takeoff.
acceleration is change in speed/time = 80m/s divided by 20sec
\( = \frac{80m}{sec}\times \frac{1}{20sec}\\ =\frac{80m}{sec*20sec}\\ =\frac{4m}{sec^2}\\ =4m/s^2\)
