Day 101: Finding Kinetic Energy


Today we were comparing the area under the F vs. x graph to the final velocity of carts when they are pulled from rest with a string attached to a force detector mounted on the cart. The data for this turned out really well and clearly indicated that the area was proportional to v^2, and students picked up quickly that the slope appeared to be half the mass. The first class actually independently started looking at the units of the slope (Area of F vs. x over velocity squared, so (N*m)/(m^2/s^2) and saw then with some guidance that the unit mess actually simplifies to kg.


One Comment on “Day 101: Finding Kinetic Energy”

  1. John Burk says:

    Such a simple experiment—I really like this.

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