Question

A small 20-kg canoe is floating downriver at a speed of 2 m/s. What is the canoe’s kinetic energy?

Answer 1

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EK = 1/2 * m * V²

Ek = 1/2 * 20 * 2²

Ek = 1 * 20 * 2² / 2

Ek = 80 / 2

Ek = 40 J

hope this helps!

Answer 2

Answer:

$E_{k} =40 Joules$

Explanation:

the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes  and this is the formula that must be applied if the speed and mass are known

$E{k}=\frac{m*v^{2} }{2}$

$E_{k}=\frac{20 Kg*2(\frac{m}{s} )^{2} }{2}\\\\E_k}=\frac{20Kg*4\frac{m^{2} }{s^{2} } }{2} \\\\E_{k}=40 kg*\frac{m^{2} }{s^{2} }\\\\\\E_{k}=40 Joules$

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