Q 24: Newton's first law of motion states that anything that stands still will stay still unless unbalanced force is acted upon that object. Newton's second law of motion states that the velocity of an object changes when subjected to external Force. Newton's third law of motion says that for every action there is an equal and opposite reaction. when bumper cars crash into each other one car goes one way and the other goes the other way.
Q 25: if the bumper cars doubled their Mass the motion would be halfed but if the net force is doubled the motion will double.
I showed my working in the images above. if you have any questions please feel free to ask
Efficiency is completing a task as fast a possible the the least amount of effort.
It slowly cools an hardens,eventually turning into igneous rock<span />
