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Kinectic Energy

by icanletyougo
Tags: energy, kinectic
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icanletyougo
#1
Mar15-11, 10:28 PM
P: 9
1. The problem statement, all variables and given/known data
Is it possible for an object to experience a net acceleration, yet maintain a constant kinetic
energy?
2. Relevant equations



3. The attempt at a solution
I think no because the kinetic energy equation is KE = (0.5)mv^2, because KE is not change, so v will not change; therefore, it will have acceleration equal =0.
But i'm not sure.
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gneill
#2
Mar15-11, 10:41 PM
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P: 11,689
What type of motion has a constant acceleration yet never goes any faster?

Hint: Think of something other than straight-line motion.
icanletyougo
#3
Mar15-11, 11:00 PM
P: 9
Quote Quote by gneill View Post
What type of motion has a constant acceleration yet never goes any faster?

Hint: Think of something other than straight-line motion.
circular motion?

gneill
#4
Mar15-11, 11:09 PM
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P: 11,689
Kinectic Energy

Quote Quote by icanletyougo View Post
circular motion?
Okay. What's your argument as to why this is so?
ashishsinghal
#5
Mar16-11, 11:16 AM
P: 460
Quote Quote by gneill View Post
What type of motion has a constant acceleration yet never goes any faster?
Will you consider centripetal acceleration constant. It keeps changing directions.
gneill
#6
Mar16-11, 12:10 PM
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P: 11,689
Quote Quote by ashishsinghal View Post
Will you consider centripetal acceleration constant. It keeps changing directions.
True, but it's a constant magnitude and the kinetic energy does not change.


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