Author Question: What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0 106 m ... (Read 82 times)

mikaylakyoung · **on:** Jul 28, 2018

What is the kinetic energy of a 200-kg satellite as it follows a circular orbit of radius 8.0 106 m around the Earth? (Mass of Earth = 6.0 1024 kg.)
a. 5.0 109 J
b. 1.0 1010 J
c. 1.5 1010 J
d. 2.0 1010 J
e. 2.5 109 J

Question 2

A spacecraft (mass = m) orbits a planet (mass = M) in a circular orbit (radius = R). What is the minimum energy required to send this spacecraft to a distant point in space where the gravitational force on the spacecraft by the planet is negligible?
a. GmM/(4R)
b. GmM/R
c. GmM/(2R)
d. GmM/(3R)
e. 2GmM/(5R)