How Does Constant Force Affect Kinetic Energy Over Time?

AI Thread Summary
The discussion revolves around a bead with a mass of 1.8x10^-2 kg moving under a constant force, initially traveling at 12 m/s. The bead comes to a stop at t=3 seconds, raising questions about its kinetic energy at t=10 seconds. The kinetic energy formula K=(0.5)mv^2 is applied, but there is uncertainty about the calculation yielding K=1.296, which may represent the initial kinetic energy. Participants are trying to determine the bead's velocity after 10 seconds, considering the effects of the constant force. The conversation emphasizes the relationship between force, time, and kinetic energy in this scenario.
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Homework Statement


A bead with mass (1.8x10^-2)kg is moving along a wire in the positive direction of an x axis. Beginning at time=0, when the bead passes through x=0 with speed 12m/s, a constant force acts on the bead, the picture indicates the bead's position at these four times: t0=0 sec., t1=1.0 sec., t2=2.0 sec., t3=3.0 sec., The bead momentarily stops at t=3.0 sec. What's the kinetic energy of the bead as t=10 sec?

Homework Equations


K=(.5)mv^2

vf^2=vi^2+2ad

The Attempt at a Solution



Is the answer K=1.296? I really think it's wrong.
 
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That seems to be the initial KE, If under constant force it took 3 seconds to stop, what will the velocity be after 10s?
 

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