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Newton's Third Law and Action-Reaction Pairs
Practice Questions

20 US Common Core Common Core US Physics questions on Newton's Third Law and Action-Reaction Pairs, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Newton's Third Law and Action-Reaction Pairs

Question 1 · 1 mark · Difficulty 1/3

A swimmer pushes backward against the water with her hands. According to Newton's Third Law, which of the following best describes what happens next?

  1. The reaction force acts on the swimmer in the same direction as her push
  2. The swimmer accelerates because her push creates a net forward force
  3. The water absorbs the force, so no reaction force acts on the swimmer
  4. The water pushes forward on the swimmer with an equal and opposite force
Show answer & explanation
✓ Answer: D — The water pushes forward on the swimmer with an equal and opposite force
Newton's Third Law states that for every action force, there is an equal in magnitude and opposite in direction reaction force acting on the other object. The swimmer pushes backward on the water (action), so the water pushes forward on the swimmer (reaction). Option B confuses net force with action-reaction pairs. Option C incorrectly suggests forces can be absorbed without a reaction. Option D contradicts the 'opposite direction' requirement of the Third Law.
Question 2 · 1 mark · Difficulty 1/3

A rocket in outer space fires its engines, expelling hot gas downward. Which statement best explains why the rocket accelerates upward?

  1. Gravity decreases in outer space, allowing any small force to move the rocket
  2. The expelled gas pushes against the ground below the rocket
  3. The upward thrust force is larger than the downward force of the gas
  4. The rocket pushes gas downward, and the gas pushes the rocket upward with equal force
Show answer & explanation
✓ Answer: D — The rocket pushes gas downward, and the gas pushes the rocket upward with equal force
This is a direct application of Newton's Third Law: the rocket exerts a force on the expelled gas (downward), and the gas exerts an equal and opposite force on the rocket (upward), causing the rocket to accelerate. Option A is incorrect because rockets work in the vacuum of space where there is no ground to push against. Option C is wrong because Third Law pairs are always equal in magnitude. Option D is incorrect; gravity still exists in outer space, and the Third Law does not depend on gravity.
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US Common Core Common Core US Physics: Newton's Third Law and Action-Reaction Pairs FAQ

How many US Common Core Common Core US Physics questions on Newton's Third Law and Action-Reaction Pairs are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Newton's Third Law and Action-Reaction Pairs for US Common Core Common Core US Physics, with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real US Common Core paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for US Common Core Common Core students preparing for US Physics?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Newton's Third Law and Action-Reaction Pairs practice with other US Physics topics or even switch to a totally different US Common Core subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Newton's Third Law and Action-Reaction Pairs questions aligned to the official US Common Core Common Core US Physics syllabus?
Every question is written against the published US Common Core Common Core US Physics specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real US Common Core paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from US Common Core.
How is Newton's Third Law and Action-Reaction Pairs typically tested on US Common Core Common Core US Physics papers?
Newton's Third Law and Action-Reaction Pairs appears across multiple question types on real US Common Core Common Core US Physics papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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