This is part of a population selected to predict information about the population as a whole. Example: 100 voters were polled after they voted, 50 voted democrat and 50 voted republican; the final results are sure to be close.

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This is scenario is undemocratic.

Explanation:

The winner of the presidential election, Donald Trump, received less votes than Democratic nominee Hillary Clinton. Furthermore, the majority of people did not vote for anyone.

a. 12.5 kg

step-by-step explanation:

f = ma

so

m = f/a = (2500 n)/(200 m/s²) = 12.5 kg

1 n = 1 kg·m/s²

it goes right