A child riding in a car along a flat road tosses a ball straight up with a speed $$\(v\)$$. To an observer standing on the ground outside the car, the ball appears to be thrown with an angle of elevation of $$\(\theta\)$$. What is the speed of the car?
A.
\(v \sin \theta\)
B.
\(v \cos \theta\)
C.
\(v \sec \theta\)
D.
\(v \tan \theta\)
E.
\(v \cot \theta\)
Exam No：AP Physics C Practice Test Year：2024 Question No：28
Answer:
E
Knowledge points:
1.2 Kinematics: Motion in Two Dimensions
Solution:
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