Answer:
1) False
2) True
3) 36N
Step-by-step explanation:
1) Quantitative observation is related to number of objects . But in that example , there isn't any number.
2) Potential energy depends on height. So potential energy increases when height increases.
3) F = m×a
In the question , m = 18 kg ; a = 2m/s^2
So, F = 18×2 = 36N