object stable? frame on earth, what will be the 0.5m 0.25 3 ss on moon fa liquid can be determined Total: 0 e calculated. Figure 4.1 (a) What is meant by moment of force? Include its Sl unit? [2] (c) Calculate the moment of force if a force of 10N is applied at point 1 to open or close the door. mass of 35g When filled wit Moment of force=_ [2] (d) Explain why it is easier to open or close the door if the handle is fixed at point 1 than at point 2 or 3. aters sity of water to be [2] Total:[4] ettler Total : (4​

i think the answer would be b

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day

its a 5.5 n

glad that