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Unformatted text preview: Pu rpose: For the first laboratory the goal was to use elastic collisions to measure a change in momentum during the collision and the integral of the force over the time of the collision. The second laboratorys goal was to observe the forces acting on two carts when they collide. Theory: Momentum is simply the mass of an object multiplied by its velocity. In the case of one object colliding with another there is a change in momentum which can be calculated as follows: . =- Eq 1 p mvf mvi where p is momentum, m is mass, and v is the objects velocity. Another way to calculate the change in momentum is by multiplying it by the net force, expressed as F , and the time of impact. The change of momentum of an object, or the integral of force with respect to time is shown below, this is also known as impulse. . = Eq 2 p Fdt In this lab a derivation of Newtons second law is used to express force in terms of momentum. This is shown below....
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