Complete the weightlessness explanation

Exercise and reference answers

Missing parts

1. Answer

   not

   Choices

   1. not
   2. partly
   3. entirely

2. Answer

   free fall

   Choices

   1. free fall
   2. vacuum
   3. darkness

Complete the statement

An astronaut in orbit feels weightless. This is {0} because gravity is weak at that height. It is because the astronaut and the satellite are both in {1}.

Explanation