Answer:
12.6 seconds
Explanation:
With respect to the gazelle, the cheetah has a relative speed of 100 - 80 = 20 km/hr.
We convert from km/hr to m/s.
![\dfrac{20000\text{ m}}{3600\text{ s}} = \dfrac{50}{9}\text{ m/s}](https://tex.z-dn.net/?f=%5Cdfrac%7B20000%5Ctext%7B%20m%7D%7D%7B3600%5Ctext%7B%20s%7D%7D%20%3D%20%5Cdfrac%7B50%7D%7B9%7D%5Ctext%7B%20m%2Fs%7D)
At this relative speed, the cheetah will overtake the gazelle in time <em>t</em> given by
![v= \dfrac{d}{t}](https://tex.z-dn.net/?f=v%3D%20%5Cdfrac%7Bd%7D%7Bt%7D)
<em>d</em> is the distance and <em>v</em> is the relative speed.
![t = \dfrac{d}{v} = \dfrac{70.0}{50/9} = 12.6\text{ s}](https://tex.z-dn.net/?f=t%20%3D%20%5Cdfrac%7Bd%7D%7Bv%7D%20%3D%20%5Cdfrac%7B70.0%7D%7B50%2F9%7D%20%3D%2012.6%5Ctext%7B%20s%7D)
increase in physical activity and muscle cells respire more than when the body is at rest
No becuase the simplified case of constant speed, use the formula:
<span>distance = speed x time</span>
Some basic reasons:
you can make more friends
you can participate in physical exercise
you can learn a new sport/skill (skateboarding)
Answer:
Yesssss its 1235 and you are beautiful