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3 years ago

20-kilogram canoe is floating downriver at 2 m/s. what’s the kinetic energy?

Physics

2 answers:

ziro4ka [17]3 years ago

6 0

Answer:

40J

Explanation:

Kinetic energy = 1/2 mv^2

Where m = mass and

v = velocity

Given mass = 20kg

v = 2m/s

K.E = 1/2 x 20 x2^2

= 1/2 x 20 x 2 x 2

= 80/2

= 40J

ryzh [129]3 years ago

3 0

To a physicist floating next to it in another canoe, its KE is zero.

To a physicist standing on the riverbank watching it go by, its KE is 40J.

They're both correct for their own reference frame.

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Answer:

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Explanation:

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2 years ago

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3 years ago

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viva [34]

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Learn more about gravitational law here:

brainly.com/question/12101547

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2 years ago