An example of kinetic energy is ______.

2 answers:

8 0

Kinetic energy is the energy of motion, and things that are
in motion have it. The only choice on the list that mentions
anything moving is the "car coming to a stop".

Bond [772]2 years ago

6 0

Answer:

An example of kinetic energy is ______.

a stretched rubber band

boulder perched on the edge of a cliff

compressed spring

car coming to a stop

Explanation:

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where σ(t) and σ(0) represents the time-dependent and initial (i.e., time =0) stresses, respectively, and t and τ denote elapsed

lesya [120]

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$E_r(6)=4.35614\ MPa$

Explanation:

$\epsilon$ = Strain = 0.49

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$\sigma=\sigma _0exp\left(-\frac{t}{\tau}\right)$

at t = 32 s

$0.41=3.1exp\left(-\frac{32}{\tau}\right)\\\Rightarrow exp\left(-\frac{32}{\tau}\right)=\frac{0.41}{3}\\\Rightarrow -\frac{32}{\tau}=ln\frac{0.41}{3}\\\Rightarrow \tau=-\frac{32}{ln\frac{0.41}{3}}\\\Rightarrow \tau=16.0787\ s$