It increases. Mercury takes 88 days to orbit the sun once. The Earth takes a year. Pluto takes 248 years.
An electrons transferred and compound forms
The answer is c: <span>1960 J
</span>Potential Energy :
<span>PE = m x g x h = 40*9.8*5=1960
</span>
The friction is 2.5N. The Net force is 10 N - 2.5 N .= 7.5 N.
acceleration = 7.5 / 5 = 1.5 m/s^2
Answer: 39.2 m/s
Explanation:
You can use the kinematic equation:
![v_f^2=v_i^2+2a*d](https://tex.z-dn.net/?f=v_f%5E2%3Dv_i%5E2%2B2a%2Ad)
We know the final velocity because it says it came to a stop. So now all we gotta do is plug in.
![0^2=v_i^2+2(-10)(76.7)\\v_i^2=1,534\\v_i=\sqrt{1534} \\=39.166 m/s](https://tex.z-dn.net/?f=0%5E2%3Dv_i%5E2%2B2%28-10%29%2876.7%29%5C%5Cv_i%5E2%3D1%2C534%5C%5Cv_i%3D%5Csqrt%7B1534%7D%20%5C%5C%3D39.166%20m%2Fs)