Homework for Newton's laws, etc.

We haven't discussed Newton's 3rd law yet, so don't worry about those questions.  Also, #11 is a review question.

1. Describe each of Newton's 3 laws.

2. A 0.5 kg toy car is pushed with a 40 newton force. What is the car's acceleration?

3. Without calculating anything, what would be the effect (in problem 2) of increasing the mass of the car?

4. Give an example of Newton's 1st law in action.

5. Give an example of Newton's 3rd law in action.

6. Newton's "big book", what I claim is the most important non-religious book of all time is _____ and was published in _____.

7.  What are epicycles and why are they important in the history of science?

8. Distinguish between weight and mass.

9.   What is the SI unit of force?  What is the English unit of force?

10.  How does weight depend on gravitational acceleration?

11.   Freefall review.  Consider a ball falling from rest.  How fast would it be moving after 4 seconds?  How far would it fall in this time?