Maximizing Kinetic Energy | Solving a Force Problem with F=12-2xN for a 2kg Body

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SUMMARY

The discussion centers on calculating the maximum kinetic energy of a 2kg body subjected to a force defined by F=(12-2x)N as it moves along the x-axis. The velocity at x=2m is given as 5.5 m/s. To determine the maximum kinetic energy, the formula KE=mv² is utilized, leading to the conclusion that the maximum kinetic energy attained by the body is 46J, as confirmed by the calculations involving the force and velocity relationship.

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1.the only force acting on a 2kg body as it moves along the x-axis is given by F=(12-2x)N where x is in m. the velocity of the body at x=2m is 5.5i m/s. what is the maximum kinetic energy attained by the body?




2. KE= mv^2



3. My friend said the answer is 46J but I am not sure how he got it
 
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You will need to find the maximum of |v(x)|. You know F(x) and mass. What quantity related to the velocity do you therefore know?
 
help!
 

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