Explanation:
1. Force applied on an object is given by :
F = W = mg
(a) A 160 lb human being, F = 160 lb
g = acceleration due to gravity, g = 32 ft/s²


m = 5 kg
(b) A 1.9 lb cockatoo, F = 1.9 lb


m = 0.059 kg
2. (a) A 2300 kg rhinoceros, m = 2300 kg

(b) A 22 g song sparrow, m = 22 g = 0.022 kg

Hence, this is the required solution.
D)
Explanation:
Coz the position changes with time but the position change is not constant throughout time So, D) does not have constant velocity
This is unclear. What are the objects? Is it a balloon? A rubber ball?
Answer:
Their velocity is 0m/s because the first box was only 10 kg and the second box was double the weight