1.A model train traveling at a constant speed around a circular trak has a constant velocity.
True
False****
2.Which of the following would be affected if a soaring eagle changes direction but remained at a constant speed?
A. Acceleration only
B. Velocity only****
C. Acceleration and velocity
D. Neither acceleration or velocity
Thank you
I agree with both.
I just took the test and #2 is c
1. False - A model train traveling at a constant speed around a circular track does not have a constant velocity. Velocity is a vector quantity that includes both speed and direction, so if the train is traveling in a circular path, its direction is constantly changing. Therefore, its velocity is not constant.
2. B. Velocity only - If a soaring eagle changes direction but remains at a constant speed, its velocity would be affected. Velocity is a vector quantity that includes both speed and direction, so any change in direction would result in a change in velocity. However, since the speed remains constant, there would be no change in acceleration.
To answer the first question, we need to understand the difference between speed and velocity. Speed is a scalar quantity that denotes how fast an object is moving, while velocity is a vector quantity that includes both the speed and direction of motion.
In the context of a model train traveling around a circular track, even if the train is moving at a constant speed, its velocity is changing because the direction of motion is constantly changing. Therefore, the statement "A model train traveling at a constant speed around a circular track has a constant velocity" is False.
Now, moving on to the second question, if a soaring eagle changes direction but remains at a constant speed, only its velocity would be affected. This is because velocity incorporates both the speed and direction of an object. Constant speed means that the magnitude of velocity remains the same, but changing direction means that velocity is changing. So, the correct answer is B) Velocity only.
Understanding the concepts of speed, velocity, and their relationship to direction is crucial in answering both of these questions correctly.