Answer:
you need kinetic energy because it is the energy that is used when In motion
Think of a wedge as something you put in between objects, so it is a separates objects
Answer:
Explanation:
Given
mass of box ![m=80 kg](https://tex.z-dn.net/?f=m%3D80%20kg)
coefficient of kinetic friction ![\mu _k=0.15](https://tex.z-dn.net/?f=%5Cmu%20_k%3D0.15)
coefficient of Static friction ![\mu _s=0.30](https://tex.z-dn.net/?f=%5Cmu%20_s%3D0.30)
cart is moving with constant velocity therefore Net Force is zero
Since there is no net acceleration therefore friction force will be zero
mathematically
![f_r=ma](https://tex.z-dn.net/?f=f_r%3Dma)
where ![f_r=frictional\ Force](https://tex.z-dn.net/?f=f_r%3Dfrictional%5C%20Force)
![a=acceleration](https://tex.z-dn.net/?f=a%3Dacceleration)
![a=0](https://tex.z-dn.net/?f=a%3D0)
![f_r=0](https://tex.z-dn.net/?f=f_r%3D0)
Answer:
if the stars connect to a thing, then it describes.
<span>As the gases go higher in the atmosphere they start to compose or join together</span>