Three players (a, b and c) shoot three arrows at a target
respectively and the results are shown above. if you are their
coach and will appoint a player to participate in an important
game, which one will you choose according to their precision
and accuracy?

i think it’s a. this is because if they measured the mass of something with a mass of 150g, then their final answer would have to be approximately 150g. though all of their answers are almost 150, rosa and tran have the closest answers (or the exact answer) to the accurate one.

not too sure thinking all accelerations are pointed down

3. dark matter

empty space could also be a simple vacuum