A motorcycle is driving 60 m/s north when it speeds up to 80 m/s north. It takes 10 seconds to speed up. What is the acceleration in m/s2 north? Type your answer

The force acting on a beam was measured under the same operating conditions and a sample of 5 data points was collected. this process was repeated by 3 observers. the pooled standard deviations of these 3 data sets was 1.21. determine the true mean force using all pooled data (with a 95% probability). the result should look like this: true mean = mean +/- margin of error