A) be too hot to support life
I believe that it is d correct me if wrong because the higher the temperature the more active the molecules are gonna be, but the graph does not explicitly state that, so you can say the answer is d (if not the answer is c) (sorry if wrong)
K.E = 0.5 * m * v^2
= 0.5 * 80 * (1.5)^2
K.E = 90 joule
The resultant force = 1000N + 1000N = 2000N
this is because the force is applied in the same direction and when this is the case you double the force to find the resultant force.
