3. A bird is flying at 23 kilometers per hour (km/h) east with respect to the ground. Relative to which of the following would the bird's velocity be 0 km/h?
A.) A second bird flying at 23 km/h north relative to the ground
B.) A second bird flying at 23 km/h east relative to the ground
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C.) A second bird flying at 23 km/h west relative to the ground
D.) A second bird flying at 23 km/h south relative to the ground

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.