SOLUTION: This is what I have so far - K=kmv^2
4500=k(90)(20)^2=36000/4500=8. I'm not sure if this means 1/8 therefore making K=1/8(90)(32)^2=92160/8(?) = 11520
K=11520 Joules ??? The ac
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Rational-functions
-> SOLUTION: This is what I have so far - K=kmv^2
4500=k(90)(20)^2=36000/4500=8. I'm not sure if this means 1/8 therefore making K=1/8(90)(32)^2=92160/8(?) = 11520
K=11520 Joules ??? The ac
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Question 283889: This is what I have so far - K=kmv^2
4500=k(90)(20)^2=36000/4500=8. I'm not sure if this means 1/8 therefore making K=1/8(90)(32)^2=92160/8(?) = 11520
K=11520 Joules ??? The actual problem is below.Any help is so appreciated. Kevin
Problem: The kinetic Energy (K) of a moving object varies jointly with its mass (m) and the square of its
velocity (v). If an object weighing 90 kilograms and moving with a velocity of 20 meters per second has a
kinetic energy of 4500 Joules, find its kinetic energy when the velocity is 32 meters per second. Found 3 solutions by Alan3354, richwmiller, solver91311:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! Problem: The kinetic Energy (K) of a moving object varies jointly with its mass (m) and the square of its
velocity (v). If an object weighing 90 kilograms and moving with a velocity of 20 meters per second has a
kinetic energy of 4500 Joules, find its kinetic energy when the velocity is 32 meters per second.
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It's 4500*(32/20)^2
= 11520 Joules
You can put this solution on YOUR website! Don't run everything together like this it only confuses matters.
Obviously the first number doesn't equal the last number
4500 does not equal 8
4500=k(90)(20)^2=36000/4500=8
also the formula for kinetic energy is wrong.
The correct formula is
K.E. =1/2 *m*v^2
