The correct answer would be A) A soccer ball passed between two players because the ball is in motion.
Heat is energy, that can be transferred to another item, which is “less hot”.
Love the toradora pfp, also the answer to your question is...
answer: from newtons second law of motion,
F=ma hence,
F=20N
m=5kg so,
20=5×a
a=4m/s^2
Ammonia is a weak base and when reacts with acid forms neutral salt
NH3+HCL= NH4Cl