Newton's Third Law of Motion (Action-Reaction) MCQs
Practice Newton's Third Law of Motion (Action-Reaction) multiple-choice questions from Force and Laws of Motion (Class 9 Science) - tap an answer for instant feedback and a step-by-step solution. Practice the full set free on the RankByte app.
Newton's Third Law of Motion (Action-Reaction)Quiz - Solve & Score
Q1. When a swimmer pushes the water backward with her cupped hands, what is the correct reaction force?
- A.the water pushes the swimmer forward
- B.the water pulls the swimmer downward
- C.the swimmer pushes the water backward
- D.the swimmer's muscles push her arms
Answer: A. the water pushes the swimmer forward
By Newton's third law the reaction to the swimmer pushing water back is the water pushing the swimmer forward.
Q2. Suppose a man steps off a small boat by pushing it backward. Which option names the reaction force correctly?
- A.gravity pulls the man down
- B.the boat pushes the man forward toward the shore
- C.the water pushes the man forward
- D.the boat pushes the man backward
Answer: B. the boat pushes the man forward toward the shore
The man pushes the boat backward; the equal reaction is the boat pushing the man forward.
Q3. If a rifle fires a bullet forward out of its barrel, which of these is the true reaction force?
- A.the air resists the bullet
- B.the bullet pushes the rifle forward
- C.the shooter's shoulder pushes the rifle
- D.the bullet pushes the rifle backward as recoil
Answer: D. the bullet pushes the rifle backward as recoil
The expanding gas drives the bullet forward; the reaction is the bullet pushing the rifle back, felt as recoil.
Master Newton's Third Law of Motion (Action-Reaction) on RankByte
Step-by-step solutions, mock tests, live ranks and streaks - free to start.
Get early access