Question

1. compared to sliding friction, fluid friction is:

• a. stronger and more difficult to overcome
• b. exactly the same strength
• c. easier to overcome
• d. only present in water environments

1. why is ice described as \slippery\?

• a. because it has very little friction
• b. because it has very high static friction
• c. because it has very high sliding friction
• d. because it has no fluid friction

Explanation:

• For question 9: Fluid friction is generally less than sliding friction. Sliding friction occurs between solid surfaces in contact, while fluid friction (like air or water resistance) is weaker. So it's easier to overcome.
• For question 10: Ice is slippery because the friction between an object (like a shoe) and ice is very low. High static or sliding friction would make it not - slippery. And the presence or absence of fluid friction is not the main reason for ice being slippery.

Answer:

1. c. Easier to overcome
2. a. Because it has very little friction