Answer:
20 m/s
Explanation:
The acceleration of an object determines the increase in velocity per second.
In this case the acceleration is 20m/s^2.

That is, the increase is 20m/s each second.
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A class action law suit is one in which the courts allow several
people who all claim to have been harmed to pool grievances
and sue for damages on behalf of the group.
Answer:
B. develop hypotheses that will be subjected to empirical test.
Explanation:
The rational method of inquiry is most useful in the early stages of science to develop hypotheses that will be subjected to empirical test.
F=1/T
therefore T=1/F
so thats T=1/20x10^6
T=5x10^-8seconds