How much energy is required to move a 1000 kg object from the Earth's surface to an altitude twice the Earth's radius?

1.250 × 10¹¹ J

Explanation:

Step 1: Given and required data

Step 2: Calculate the energy required to move the object

The energy required to move the object from the Earth's surface to an altitude twice the Earth's radius is equal to the change in the gravitational potential energy (G) between both levels. We will use the following expression.

E = G₂ - G₁

E = m × g × h₂ - m × g × h₁

where h is the altitude (h₁ = 0)

E = m × g × h₂

E = 1000 kg × 9.807 m/s² × 2 × 6.371 × 10⁶ m

E = 1.250 × 10¹¹ J

lol

explanation:

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)