Knock out the false force pair claims
Exercise and reference answers
- Questions
- Question
- Three of these claims about an action and reaction pair are false.
- Choices
- Item
- The two forces act on different bodies
- Correct
- Yes
- Explanation
- They act on different bodies, so neither can cancel the other.
- Item
- The two forces cancel each other out
- Explanation
- A rocket pushes out gas and works better with no air at all.
- Item
- A rocket pushes on the air behind it
- Explanation
- The two forces are equal in size and opposite in direction.
- Item
- The reaction is weaker than the action
- Instructions
- Tap the three false statements about action and reaction pairs to clear them away.
Explanation
_Source: OpenStax College Physics, Ch 4 Dynamics: Force and Newton's Laws of Motion, section 4.4 Newton's Third Law of Motion: Symmetry in Forces_