Question

A group of scientists is trying to launch an object into orbit, and the object is traveling at 6500 m/s. Which best explains why the object will not successfully orbit Earth? There is not enough air resistance to keep the object moving. There is not enough friction to keep the object moving. The object is not traveling fast enough to match Earth’s curvature. The object is traveling too fast to match Earth’s curvature.

Answer 1

Based on the options given, the most likely answer to this query is 

The object is not traveling fast enough to match Earth’s curvature. 
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Answer 2

the correct statement is

The object is not traveling fast enough to match Earth’s curvature.

for an object to escape the gravitational field of earth, the required speed is 11000 m/s roughly. the object in the question statement has smaller speed than the required escape speed. hence the object will not be able to overcome the gravitational field of earth and will fall short.