When you perform calculations that use measurements ( quantitative ), you need to express the results of your calculations in a way that makes sense of the precision of the measurements you used.
In other words, if you measured your distance as 2.3 centimeters and the time as 1.1 s, you wouldn’t report the speed as 2.0909 cm/s because it implies a precision you didn’t have with your measurements
4. A zero at the beginning of a decimal point is not significant. In the measurement 0.027kg, the zeros are not significant. That measurement has two sig figs.
Draw a free body diagram that you think would represent two forces in opposite directions that would result in no net force (and thus, no acceleration)
What if the forces aren’t in line with each other?
36.
You add the vectors using tip-to-tail and then use the Pythagorean theorem to solve a 2 + b 2 = c 2 (40 N) 2 + (60 N) 2 = c 2 1600 N 2 + 3600 N 2 = c 2 5200 N 2 = c 2 c = 72 N
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