Here are the solutions to the questions in your quiz. I have worked through each one step-by-step to ensure they are correct.
1. What is Newton's First Law known as?
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Reasoning: Newton's First Law states that an object will not change its motion unless a force acts on it. This tendency to resist changes in motion is called inertia. Therefore, it is often called the Law of Inertia.
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Answer: D (Inertia)
2. Because of inertia, a resting object _______.
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Reasoning: Inertia means objects keep doing what they are doing. If an object is sitting still (resting), inertia says it wants to stay sitting still until something pushes or pulls it.
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Answer: A (will remain at rest)
3. As more unbalanced force is applied to an object, its acceleration:
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Reasoning: According to Newton's Second Law ($F=ma$), Force and Acceleration are directly related. If you push something harder (more force), it speeds up faster (more acceleration).
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Answer: C (increases)
4. What is the formula for force?
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Reasoning: The standard formula for Force is Mass multiplied by Acceleration.
* $F = \text{Force}$
* $m = \text{mass}$
* $a = \text{acceleration}$
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Answer: C (F=M*A)
5. A 20 kg bike accelerates at 10 m/s². What was the force?
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Calculation:
1. Identify the values: Mass ($m$) = $20\text{ kg}$, Acceleration ($a$) = $10\text{ m/s}^2$.
2. Use the formula: $F = m \times a$.
3. Multiply: $20 \times 10 = 200$.
4. The unit for force is Newtons.
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Answer: B (200 Newtons)
6. An object in motion stops when.....
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Reasoning: Newton's First Law says an object in motion stays in motion forever *unless* acted upon by an outside force (like friction, gravity, or a wall). It doesn't stop on its own; something has to make it stop.
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Answer: D (it is acted upon by an outside force.)
7. The force that prevents a ball rolling on the ground from continuing on it's path forever is...
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Reasoning: When a ball rolls on the ground, the surface rubs against the ball. This resistance is called friction. Friction slows things down and eventually makes them stop.
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Answer: Friction (Note: The options aren't fully visible, but "Friction" is the correct scientific answer).
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Final Answer:
1. D
2. A
3. C
4. C
5. B
6. D
7. Friction
Parent Tip: Review the logic above to help your child master the concept of newton laws of motion worksheet.
