Workbook Chapter 2b Kinematics

Situations Where Acceleration is Constant

Falling Body Problems (Plug & Chug, Oh Boy!)Discuss and Derive the equations.
Let's do like Galileo did, slow this motion down by putting it on an incline, so we can study it.
Demo / Groups -
    •    Drop a book (different sizes) from the ceiling and obtain good data for a falling body.
    •    Toss up bowling ball, baseball, and nerf ball
    •    Get average acceleration
    •    Highlite data and transfer to GA
    •    Look at x vs t, v vs t, a vs t,
    •    Discuss coefficients and what they ought to be, then correct time and redo.

Question: So, how does the acceleration due to gravity changes for different objects?
More questions to ponder. (Use acceleration due to gravity g= 10m/s/s)
A girl tosses a ball straight up with an initial velocity of 30 m/s.
1. How fast will it be travelling after 2 seconds?
2. How long will it take it to reach its maximum altitude?
3. How fast will it be travelling 2 seconds after it reaches its maximum altitude?
4. How fast will it be travelling when it returns to the girl who tossed it?
5. What is its acceleration : a) half way up, at the top, half way down ?

Workbook Activities