Answer:
Solon,
total mass (kg)= 100kg
height (h)= 25m
acceleration due to gravity = 9.8m/s²
so,
work done =m*g*h
= 100*9.8*25
= 24,500 joule
46
Explanation:
because
20/45=0.4*100= 44.4 so the answer is..................................................
Answer: 44.4%
