Hi, I had some questions about Physics and Newton’s Three Laws of Motion and was wondering if someone could possibly help me. I wasn't sure if my answers were correct and I need to make sure they are.

#1 Write out in words what “acceleration ~ net force” means.
My Answer: I think it means that acceleration is directly proportional to net force.

#2 True or False: On Earth the mass and weight of an object are the same.
My answer: False

#3 In space, would an object with a weight of 20 Newtons or an object with a mass of 2 kilograms have more Inertia?
My Answer: They would have the same inertia or
The object with a mass of 2 kilograms (I wasn’t sure.)

#4 True or False: For the same net force on an object, less mass means more acceleration.
My Answer: False

#5 True or False: The quantity 1/10 is less than the quantity 1/100. WHY?
My Answer: False, both quantities are the same?! (I was really confused by this question.)

#6 True or False: All free-falling objects have the same force/mass ratio and undergo the same acceleration at the same location.
My Answer: False

Thank you guys so much. I have a huge test over this next week and I still don’t think I’ve grasped the whole idea behind all of these concepts. Physics isn’t my best subject and if anyone knows any good websites that can help me out, I would really appreciate it.

6 wrong. Ignoring air friction, didn't Galelio prove things fell at the same rate?

5. Which is less? .01 or .1 ? Think.
4. wrong. A= F/m
3. The question is faulty. I wonder how weight is determined is space? Where in space? Weight in relation to what Planet?

Hello! I'd be happy to help you with your questions.

For question #1, you wrote that "acceleration ~ net force" means that acceleration is directly proportional to net force. That answer is correct! "Acceleration ~ net force" means that the acceleration of an object is directly proportional to the net force applied to it. This means that if the net force increases, the acceleration also increases, and vice versa.

For question #2, you said that on Earth, the mass and weight of an object are not the same. That answer is correct! In physics, mass is a measurement of the amount of matter in an object, while weight is the force exerted on an object due to gravity. Mass is constant, meaning it does not change regardless of location, but weight can vary depending on the strength of gravity. So, mass and weight are different concepts.

For question #3, you mentioned that an object with a weight of 20 Newtons and an object with a mass of 2 kilograms would have the same inertia. That answer is incorrect. Inertia is a property of matter that describes its resistance to changes in motion. Greater mass leads to greater inertia. In this case, since the object with the weight of 20 Newtons has a greater mass (weight is directly proportional to mass), it will have more inertia than the object with a mass of 2 kilograms.

For question #4, you stated that for the same net force on an object, less mass does not mean more acceleration. That answer is correct! According to Newton's second law of motion, the acceleration of an object is inversely proportional to its mass. This means that for the same net force, if the mass of an object is decreased, the acceleration increases, and vice versa. So, less mass means more acceleration.

For question #5, you said that the quantity 1/10 is not less than the quantity 1/100, but both quantities are the same. That answer is incorrect. The quantity 1/10 is indeed less than the quantity 1/100. To compare fractions, you can find their decimal equivalents. 1/10 is equal to 0.1, while 1/100 is equal to 0.01. As you can see, 0.1 is greater than 0.01, so 1/10 is greater than 1/100.

For question #6, you mentioned that all free-falling objects do not have the same force/mass ratio and do not undergo the same acceleration at the same location. That answer is incorrect. In a vacuum or in the absence of air resistance, all objects near the surface of the Earth, regardless of their mass, experience the same acceleration due to gravity. This means they have the same force-to-mass ratio and undergo the same acceleration at the same location.

As for resources to help you with Physics, here are a few websites you can check out:

1. Khan Academy (https://www.khanacademy.org/): Khan Academy offers free online lessons and practice exercises for various subjects, including Physics. They have a comprehensive section on Newton's Laws of Motion.

2. Physics Classroom (https://www.physicsclassroom.com/): Physics Classroom provides tutorials, interactive lessons, and problem-solving help for Physics topics.

3. HyperPhysics (http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html): HyperPhysics is an online resource that covers a wide range of Physics topics. It provides clear explanations and diagrams for better understanding.

Remember, practice and understanding the concepts through examples are key to succeeding in Physics. Good luck with your test!