The net force on any object moving at constant velocity is
A) zero.
B) 10 meters per second squared.
C) equal to its weight.
D) about half its weight.
Question 2
When a spacecraft is launched from the earth toward the sun, at what distance from center of the earth will the gravitational forces exerted on it by the sun and earth cancel?
Earth's mass is 5.97 1024 kg, the sun's mass is 1.99 1030 kg, and the Earth-sun distance is 1.5 1011 m.
A) 1.3 108 m
B) 2.6 108 m
C) 1.3 1010 m
D) 2.6 1010 m