You are videotaping the peachtree bicycle road race. You are 50 ft from
the (middle of the) road. You are following a bicycle going at 25 miles
per hour down Peachtree. (Note: 25 miles per hour is 36 .67 feet per second.)
How fast is the camera angle changing when the bicycle is right in from of you?
How fast 1 second later? Express answers in radians per second.
You can convert everything to feet or everything to miles.
When the bicycle is straight ahead, cos[&thgr;] = 1.
Radias per second.
A plane is flying with a constant speed of 300 km/hr at a height of 4 km. The plane flies over a ground radar installation. One half hour later, how fast is the distance
from the plane to the radar installation changing?