What is the displacement of the object?
0 -2 m
0 -1 m
3 m
0 4 m

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

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

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.