Compare the motion of the boy and the man who was going faster? Was their acceleration about the same? Who had more frictional force? What might have caused the difference in frictional force?

i believe it is 40–40–20%

explanation:

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

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can you list the answers so i can answer