Warmup #3

1-Dimensional Kinematics and Equations

Course

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The first three questions refer to the material you were to read in preparation for the lesson. Questions one and two require you to write a three or four sentence response. Number three is a multiple choice question. Click in the appropriate circle.Questions 4 is your opportunity to suggest what we should emphasize today and how.

You may change your mind as often as you wish. When you are satisfied with your responses, click the SUBMIT button at the bottom of this page.


1) A car skids to a stop with locked brakes and leaves skid marks 30 m long. What information about the car would the police need to get to be able to estimate how fast the car was traveling when the driver slammed on the brakes?


2) A basketball player jumps 1 meter high off the ground, then falls back down.

Calculate the time she is in the air (her hang time).


3) What assumption about acceleration is used to derive the kinematics equations?

  1. acceleration must be constant
  2. acceleration must be 9.8 m/s2
  3. acceleration must be positive
  4. acceleration must be zero


4. Below is a space for your thoughts, including general comments about today's assignment (what seemed impossible, what reading didn't make sense, what we should spend class time on, what was "cool", etc.):




You may change your mind as often as you wish. When you are satisfied with your responses, click the SUBMIT button.

I received no help from anyone on this assignment.