Complete Newton's first law

Exercise and reference answers

Missing parts

1. Answer

   uniform

   Choices

   1. uniform
   2. circular
   3. accelerated

2. Answer

   external

   Choices

   1. external
   2. internal
   3. frictional

3. Answer

   acceleration

   Choices

   1. acceleration
   2. velocity
   3. momentum

Complete the statement

Every body continues in its state of rest or of {0} motion in a straight line, unless compelled by some {1} force to act otherwise. Put simply, if the external force is zero then the {2} is zero.

Explanation