Three of these are wrong. Find the one that holds.

Exercise and reference answers

Questions

1. Question

   Three of these statements about the first law are false.

   Choices

   1. Item

      Zero net force means zero acceleration

      Correct

      Yes

   2. Explanation

      The chapter says this Aristotelian view is wrong.

      Item

      Force is needed to keep moving

   3. Explanation

      It covers uniform motion in a straight line too.

      Item

      It applies only to bodies at rest

   4. Explanation

      That is the definition of momentum, not the first law.

      Item

      It defines momentum as mass times velocity

Explanation