Labs

Remember that our labs are part of the scientific method. All ( or nearly all) our labs have a purpose of confirming the theory we have established from observation, deduction , and some algebra. The projectile motion lab's purpose was to confirm our projectile motion equations relating v,delta t, a, delta x and delta y. This includes the fact that the y and x motions are independent except through a common time of flight.

The a =F/m? lab's purpose is contained in its title.

Your conclusion section should reflect the purpose of the lab. It should state whether or not the experiment confirms our theory and include a summary of the supporting evidence for your conclusion. This is the final step of the scientific method: reporting on the results of testing your hypothesis.

Note that if you use 3 different equations applied to two differing kinds of motion and your results come within 5 % of your prediction, it probably indicates your theory is pretty good. This is especially true if your equipment and measuring techniques are not perfect.