Gerard is measuring the speed of a remote-controlled airplane. He measures that the airplane travels 110 m in 5.4 seconds, giving a speed of 20 m/s. What will Gerard need to change, if he wants to get a more precise value for speed?
Measuring the distance over a longer time period will reduce the effects of measurement errors on the calculations .... as a second choice he could do more of the same measurements and average the results .
