Question 9 (1 point)
How does a spacecraft leave the surface of the Earth?
a
The spacecraft produced a downward force of thrust that was less than the downward force of gravity.
b
The spacecraft produced a downward force of thrust that was equal to the downward force of gravity.
c
The spacecraft produced an upward force of thrust that was greater than the downward force of gravity.
d
The spacecraft produced an upward force of thrust that was equal to the downward force of gravity.
c
The spacecraft produced an upward force of thrust that was greater than the downward force of gravity.