The heavy one because mass times force is equal to speed. The lighter one has less mass to it goes faster without as much effort. I hope that helps!
ANSWER
Power stroke
EXPLANATION
At the power stroke stage, the piston is forced to move down by the expanding gases as both intake valve and exhaust valve are closed.
A spark from the spark plug contributes to ignition of the compressed fuel air mixture to released energy to perform work.
A is true
B is false
C is true
They are the same due to the fact that they either share electrons or transfer electrons. Molecules from when atoms link together, and ionic compounds are formed due to the transfer of electrons.