Acceleration

PREFLIGHT

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The following three questions refer to the material you were to read in preparation for the lesson.

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Car Physics

When attempting to stop a car quickly on dry pavement, which of the following will stop the car in the least time:

Slam on the brakes as hard as possible w/o skidding
Slam the brakes so the wheels lock and skid
Pump the brakes as fast as you can with your foot
Rely on your ABS brakes to "pump" for you
Other (please explain below)

honors extra

Block on an inclined plane

A small block of mass m rests on the sloping side of a triangular block of mass M which itself rests on a horizontal table as shown in the figure. Assuming all surfaces are frictionless, determine the force F that must be applied to M so that m remains in a fixed position relative to M ( that is, m doesn't move on the incline).

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.):

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I received no help from anyone on this assignment.