Let's go through each of the questions from your quiz on
Newton's Laws of Motion and solve them one by one, with explanations.
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1. What is Newton's First Law known as? The Law of
A) Gravity
B) Inertia ✔
C) Mass
D) Friction
✔ Correct Answer: B) Inertia
Explanation:
Newton’s First Law is also called the
Law of Inertia. It states that an object will remain at rest or in uniform motion unless acted upon by an external force. This resistance to change in motion is called
inertia.
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2. What is Newton's First Law?
A) An object at rest stays at rest, an object in motion stays in motion. ✔
B) Every action has an equal and opposite reaction
C) F=ma
D) Friction
✔ Correct Answer: A
Explanation:
This is the exact statement of
Newton’s First Law. Option B is Newton’s Third Law, and C is Newton’s Second Law.
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3. Because of inertia, a resting object ________.
A) is unbalanced
B) will eventually move
C) will move at a constant speed
D) will remain at rest ✔
✔ Correct Answer: D) will remain at rest
Explanation:
Inertia is the tendency of an object to resist changes in its state of motion. So, if an object is at rest, it will stay at rest unless a net force acts on it.
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4. The first law of motion states that objects in motion will:
A) stay in motion ✔
B) rest
C) accelerate
D) stop
✔ Correct Answer: A) stay in motion
Explanation:
Newton’s First Law says that an object in motion will continue moving at a constant velocity (same speed and direction) unless acted upon by an unbalanced force.
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5. Newton's second law of motion states that an unbalanced force is equal to mass times:
A) inertia
B) acceleration ✔
C) force
D) motion
✔ Correct Answer: B) acceleration
Explanation:
Newton’s Second Law is expressed as:
F = m × a
So, force equals mass times
acceleration.
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6. As more unbalanced force is applied to an object, its acceleration:
A) decreases
B) stays the same
C) increases ✔
✔ Correct Answer: C) increases
Explanation:
From
F = ma, if mass remains constant, increasing the force leads to greater acceleration. So, more force → more acceleration.
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7. What is the formula for force?
(You didn't include options here, but based on standard knowledge:)
✔ Answer: F = m × a
(Force = mass × acceleration)
This is Newton’s Second Law.
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✔ Summary of Answers:
| Question | Answer | Explanation |
|--------|--------|-----------|
| 1 | B) Inertia | Newton’s First Law is the Law of Inertia |
| 2 | A) An object at rest stays at rest... | Definition of First Law |
| 3 | D) will remain at rest | Inertia keeps resting objects at rest |
| 4 | A) stay in motion | Objects in motion stay in motion unless acted upon |
| 5 | B) acceleration | F = m × a |
| 6 | C) increases | More force → more acceleration (if mass is constant) |
| 7 | F = m × a | Formula for force |
Let me know if you'd like help with the remaining questions (8–20)!
Parent Tip: Review the logic above to help your child master the concept of newton first law worksheet.
