Problem 9 The driver of the car maintains a constant speed of
40 m/s. Determine the angular velocity of the
camera tracking the car when theta = 15°.
r = (100 cos(2theta) ) m

[Hibbeler: 12-191: theta' = 0.302 rad/s (or
34,61 deg/s)]

I tried many methods and none worked for me. Please help

The flow rate of air through a through a pipe is 0.02 m5/s. a pitot static tube is placed in the flow. the radius of the pitot static tube is 1 mm. assuming the flow to be steady and the air to be at 300k, calculate the difference in total and static pressure if the diameter of the pipe is: (a) d 0.1 m d 0.05 m (c) d 0.01 m