Answer:
Explanation:
Appears to be the vertexes of a triangle.
AB = √(-6 - (-2))² + (3 - 4)²) = √17
AC = √(-6 - (-8))² + (3 - 3)²) = 2
BC = √(-2 - (-8))² + (4 - 3)²) = √37
Hey there,
Friction is important to increase the friction between the bars and the gymnast to prevent the gymnast from falling and hurting themselves.
Hope this helps :))
<em>~Top♥</em>
Answer:
34.6 m/s
Explanation:
From conservation of momentum, the sum of initial and final momentum are equal. Momentum is a product of mass and velocity. Initial mass will be 42.8+31.5+25.9=100.2 kg
Final mass will be 31.5+25.9=57.4 kg
From formula of momentum
M1v1=m2v2
Making v2 the subject of the formula then
![V2=\frac {M1v1}{m2}](https://tex.z-dn.net/?f=V2%3D%5Cfrac%20%7BM1v1%7D%7Bm2%7D)
Substitute 100.2 kg for M1, 19.8 m/s fkr v1 and 57.4 kg for m2 then
![V2=\frac {100.2 kg\times 19.8 m/s}{57.4 kg}=34.56376 m/s\approx 34.6 m/s](https://tex.z-dn.net/?f=V2%3D%5Cfrac%20%7B100.2%20kg%5Ctimes%2019.8%20m%2Fs%7D%7B57.4%20kg%7D%3D34.56376%20m%2Fs%5Capprox%2034.6%20m%2Fs)
Well, the acceleration is the difference of speeds divided by the time period.
![\frac{32.4}{0.5}=64.8rev/s^2](https://tex.z-dn.net/?f=%5Cfrac%7B32.4%7D%7B0.5%7D%3D64.8rev%2Fs%5E2)
.
One rev/s is
![2\pi rad/s^2](https://tex.z-dn.net/?f=2%5Cpi%20rad%2Fs%5E2)
, so our final result is
![64.8*2\pi=407.15rad/s^2](https://tex.z-dn.net/?f=64.8%2A2%5Cpi%3D407.15rad%2Fs%5E2)
.