- #1
Sebkarp0
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Homework Statement
When accelerating upward off a trampoline, how would you depict this on an acceleration-time graph? I know kinematics is the study of motion without a strict regard to the forces that are capable of changing motion, but according to Newton's 2nd law, an object accelerates in the direction of the net force. Thus, when you accelerate upward off the trampoline at the very beginning in a very small fraction of time, this force would have to overcome the person's force of weight right? So my question is this: would you display this initial acceleration as being greater than 9.8 m/s^2 or would you show the net acceleration on the acceleration-time graph (that is, would you put a number like 10 m/s^2 or 0.2 m/2^ respectively). I guess the same applies when you land back on the trampoline and accelerate in the positive direction to slow down... I would be grateful if someone could explain this to me. Thanks!
Homework Equations
F=ma and kinematic equations for free fall.
The Attempt at a Solution
I can't decide on the acceleration offhand...