Many people mistakenly believe that astronauts who orbit Earth are "above gravity." Calculate g for space shuttle territory, 200 km above Earth’s surface. Earth’s mass is 6.0 × 10 24 kg, and its radius is 6.38 × 10 6 m (6380 km). Your answer is what percentage of 9.8 m/s2?

Explanation:

Value of g at a height of 200 km

= GM / (R+h)²

= G is gravitational constant , M is mass of the earth , h is height

= 6.67 x 10⁻¹¹ x 6 x 10²⁴ / [(6380+200)² x 10⁶]

= 9.24 m / s²

Percentage of g

= (9.24 / 9.8 )x100

= 94.28 %

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