What is the difference between force and mass?

1. What is the relationship between force, mass, and acceleration according to Newton's second law?

1. What is Hooke's law and what does it describe?

1. How is the turning effect of a force calculated?

1. What is the center of gravity of an object?

1. What factors affect the stability of an object?

1. Explain why a ball rolling down a hill speeds up, while a ball resting on a flat surface stays still.

You're trying to open a stuck door. How can you increase the turning effect of your force? Explain

1. Why is the base of a pyramid wider than its top? Explain in terms of center of gravity and stability.

1. A 5 kg box sits 1 meter from a fulcrum on a seesaw. A 2 kg box sits on the other side, 2 meters from the fulcrum. Will the seesaw balance? Explain your answer using calculations.

What could happen if you stood on the edge of a cliff?(only answer according to the topic)

You see a seesaw balanced with a kid on one side and weights on the other. How can you tell if the kid is heavier than the weights?

How can you open a stuck jar lid?

Imagine you're a spring! How does your "stretchy-ness" change with more force?

What happens if you use the same force on different springs? Do they all stretch the same amount?

If you hang a weight on a spring, what happens? Can you use Hookes' Law to figure out how much it stretches?

What happens if you cut a spring in half? Does the spring constant k stay the same? Explain.

You kick a soccer ball. Does it stay still? Why or why not?

You see a leaf falling from a tree. Why doesn't it zoom up to the sky?

1. A spring hangs vertically, with a weight attached. The spring stretches 10 cm when the weight is hanging still. What is the spring constant k if the weight is 5 kg?

You're building a seesaw. How can you design it so a lighter child can balance a heavier adult?