TIPERS B3-CT26: CURLER PUSHING STONE-FORCE ON STONE
Two identical curling stones (the playing pieces in the sport of curling) are pushed horizontally on ice by curlers.
The instantaneous speed and acceleration of the two stones are given. Ignore the friction between the stone and the
ice.
А
B
V=3 m/s
V = 2 m/s
a = 1 m/s2
a= 2 m/s2
Is the magnitude of the force that the curler is exerting on the stone (i) greater in Case A, (ii) greater in Case
B, or (iii) the same in both cases?
Explain your reasoning.

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