Mm - NASA
How is the space shuttle able to leave Earth's surface?
A The space shuttle's engines create an upward force greater than the downward force of gravity
B. The space shuttle's engines create a downward force greater than the upward force of gravity
c. The space shuttle's engines create an upward force less than the downward force of gravity
D. The space shuttle's engines create a downward force less than the upward force of gravity
