Answer:

we choose the sign, in order to x<s
Explanation:
x=distance from q1




this is a quadratic equation:


Answer:
V = 1.45x10^3 m/s
Explanation:
number of days in sec = 1.02days * 86400s = 88128 s
Mass of Mars is 6.42*10^23 Kg
gravitational constant G = 6.674*10^{-11}


(b) 

V
Bryan? NEED INFO, GIVE ME MOOOOOAR
Answer:
I'm no expert, but multitasking is a no bueno. Because multitasking reduces your efficiency and performance because your brain can only focus on one thing at a time. When you try to do two things at once, your brain lacks the capacity to perform both tasks successfully.
Therefore I would choose A, considering he could easily workout another time, whilst the test is a one time thing. He can't redo the test, but he can workout again. So my answer is A.
If he HAS to workout and study at the same time, then C would be appropriate.
I hope this helps!