Arod of length r and mass m is pivoted at its center, and given an angular velocity, ω1. what would be the angular velocity of a second rod, which has the same angular momentum as the first, but whose length is 3r and whose mass is 2m? question 1 options:
a. w1/5
b. w1/6
c. w1/12
d. w1/18

You are driving to the grocery store at 20 m/s. you are 110m from an intersection when the traffic light turns red. assume that your reaction time is 0.50s and that your car brakes with constant acceleration. how far are you from the intersection when you begin to apply the brakes? what acceleration will bring you to rest right at the intersection? how long does it take you to stop after the light changes? the known values: vi=20m/s xi=110m t=.50s vf=0m/s xf=0m a=?