Question

The following velocities are found for a toy car.

trial 1: Calculated v (m/s)= 4.3, Accepted velocity (m/s)= 5.27
trial 2: Calculated v (m/s)= 5.2, Accepted velocity (m/s)= 5.27
trial 3: Calculated v (m/s)= 5.2, Accepted velocity (m/s)= 5.27

a) What is the absolute error for Trial 1? number should be m/s
b) What is the relative error for Trial 3? number should be in %

Answer 1

assuming all to two significant figures:
|4.3-5.3 | = 1.0 m/s
100 (5.3-5.2) / 5.3 = 10/5.3 %