Aisha is sailing with her motorboat at a speed of 14 m/s when she suddenly sees a swimmer appearing 24 meters away. It reacts after
0.9 seconds and then puts the engine into reverse at full throttle. The
braking distance is then 12 m.
Explain whether Aisha stops on time and explain your answer with a
calculation.

explanation:

as the height from which the ruler was dropped increased, the speed of the ruler at ryan's hand increased.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

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

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