Answer:
FN is the forces acting on a body. When the body is at rest, the net force formula is given by, FNet = Fa + Fg.
Im in 7th and thats all I know so I hope it's enough
Answer:
B
Explanation:
The impulse experienced by an object is the force•time.
Answer:
![x=1.75m](https://tex.z-dn.net/?f=x%3D1.75m)
Explanation:
From the exercise we have that
![y_{o}=1.3m\\v_{o}=3m/s, \beta =37\\](https://tex.z-dn.net/?f=y_%7Bo%7D%3D1.3m%5C%5Cv_%7Bo%7D%3D3m%2Fs%2C%20%5Cbeta%20%20%3D37%5C%5C)
<em><u>To find how far from the edge of the piano does the cat strike the floor, we need to calculate its time first </u></em>
![y=y_{o}+v_{oy}t+\frac{1}{2}gt^{2}](https://tex.z-dn.net/?f=y%3Dy_%7Bo%7D%2Bv_%7Boy%7Dt%2B%5Cfrac%7B1%7D%7B2%7Dgt%5E%7B2%7D)
At the end of the motion y=0m
![0=1.3+3sin(37)t-\frac{1}{2}(9.8)t^{2}](https://tex.z-dn.net/?f=0%3D1.3%2B3sin%2837%29t-%5Cfrac%7B1%7D%7B2%7D%289.8%29t%5E%7B2%7D)
Solving for t
or ![t=0.73s](https://tex.z-dn.net/?f=t%3D0.73s)
Since the <u>time</u> can't be negative the answer is t=0.73
Knowing that we can calculate how far does the cat strike the floor
![x=v_{ox}t=3cos(37)(0.73)=1.75m](https://tex.z-dn.net/?f=x%3Dv_%7Box%7Dt%3D3cos%2837%29%280.73%29%3D1.75m)