Procedure• Weigh the marbles to find mass• Measure the track• Line up the marbles touching each other on the track• Bring the end marble to the end of the track and push it into the line• Start the stopwatch when you push the marble and stop it when the last marble falls ff the track• Record the results• Repeat steps 3-6 changing how hard you push the marble every time• Find the acceleration of each trial and compare how it changes when you change the force you apply
Calculations• These calculations are needed to find acceleration and force: –Distance/time=speed –Speed + direction=velocity –Final velocity-initial velocity/time=acceleration –Mass x acceleration=force
• Newton’s 1st law – An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by unbalanced forces.• This lab relates to Newton’s 1st law because when you push the marble, it would keep going, but because it hits another marble, it is acted on by an unbalanced force and stops moving.
• Newton’s 2nd Law – When you increase the force of an object the acceleration increases, and when you increase mass the acceleration decreases. (inertia)• Newton’s 2nd law relates to this experiment because the acceleration increased when we used more force to push the marble. If we would’ve changed the size of the marbles as well, the acceleration would’ve decreased.
Newton’s 3rd Law• Newton’s 3rd law – Every action has an equal and opposite reaction• This law relates to our lab because when the marble hits another marble, the momentum travels through the line and makes the opposite marble come off the end.