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gtnhenbr [62]
2 years ago
10

An Olympic athlete of mass 80kg competes in a 100m race. What is the best estimate of his mean kinetic energy during the race?

Mathematics
1 answer:
kipiarov [429]2 years ago
3 0
For this question, you need to know that the average velocity of a 100m Olympic athlete is 10 m/s before you start solving the equation. The equation is K (energy in Jules) = 1/2 mv^2 (where m is the mass in kg and v the speed in meters per second). 
The correct answer is 4000J. To see how I got it, take a look at the attachment. 

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Answer:

The answer is "Screen B is wider , because 5.3 is greater than 5 and one-third".

Step-by-step explanation:

The mobile display unit must be made similar. Phone A uses a decimal device, and telephone B uses a fraction in this case.

It's easier for you to use. Attempt using the decimal. The width of the phone B fraction could then be translated to decimal width. The computing is:

= 5 cm + \frac{1}{3} cm

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It is evident from here that the wider screen of Phone B is than that of Phone A.

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1 year ago
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1 year ago
The students at Southern Junior High School are divided into four homerooms. Benjamin just moved into the school district and wi
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Answer:

Step-by-step explanation:

Roll a number cube with 1 representing the first homeroom, 2 representing the second homeroom, 3 representing the third homeroom, and any other outcome representing the fourth homeroom.

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6 - 0.617. WHAT IS SIX MINUS 0.617​
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Answer:

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