Final answer:
The motion of a dog chasing a frisbee is best described as projectile motion, which involves an object moving in a two-dimensional plane under the influence of gravity. This is in contrast to uniform circular motion, which is motion in a circular path at a constant speed.
Step-by-step explanation:
The motion of a dog chasing a frisbee can be classified as projectile motion. When an object such as a dog chases a frisbee, the dog moves in a two-dimensional plane, potentially having both a vertical and a horizontal component of motion.
This is similar to the motion of a football or any other object thrown into the air for which air resistance is negligible. Projectile motion is defined as the motion of an object thrown or projected into the air, subject only to the acceleration of gravity, and the object's path is called its trajectory.
Uniform circular motion is defined as motion in a circular path at constant speed. The options provided for the definition of uniform circular motion would name 'C' as the correct definition, which means an object travels on a circular path at a constant speed.
Therefore, when a dog is chasing a frisbee in a non-linear, non-circular pattern and altering its motion in response to the frisbee's location, the most accurate description of its motion is projectile motion, assuming the dog makes leaps or jumps as part of the chase.
Therefore answer is A) Projectile motion.