- #1

- 62

- 0

An unpowered 1600 kg object has an upward velocity of 7.0 x 10^3 m s at an

altitude of 100 km above the earth. The object reaches a maximum altitude of 400 km.

Earth

100 km

400 km

v = 7.0 × 10^3 m s

What is the heat energy generated during the object’s increase in altitude from 100 km

to 400 km?

A. 3.3 x 10^10 J

B. 3.4 x 10^10 J

C. 3.5 x 10^10 J

D. 5.5 x 10^10 J

this is from a sample exam, my teacher didnt teach us any of it.

I used EP= Gm1m2/(r^2) for each position, and ek = .5 mv^2 and subtracted the two and got a totally wrong answer.... Please help me.