IE oo A race car travels a complete lap on a circular track...

IE oo A race car travels a complete lap on a circular track of radius $500 \mathrm{~m}$ in $50 \mathrm{~s}$. (a) The average velocity of the race car is (1) zero, (2) $100 \mathrm{~m} / \mathrm{s},$ (3) $200 \mathrm{~m} / \mathrm{s},$ (4) none of the preceding. Why? (b) What is the average speed of the race car?

IE oo A race car travels a complete lap on a circular track of radius $500 \mathrm{~m}$ in $50 \mathrm{~s}$. (a) The average velocity of the race car is (1) zero, (2) $100 \mathrm{~m} / \mathrm{s},$ (3) $200 \mathrm{~m} / \mathrm{s},$ (4) none
of the preceding. Why? (b) What is the average speed of the race car?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Average Velocity

Average velocity is defined as the net displacement divided by the time interval. It is a vector quantity that considers only the starting and ending points of a motion. When an object returns to its original position, its displacement becomes zero, making the average velocity zero regardless of the distance traveled.

Displacement

Displacement is a vector quantity representing the change in position of an object from its initial point to its final point. It is independent of the path taken, meaning that if the object ends where it began, the displacement is zero.

Average Speed

Average speed is a scalar quantity calculated as the total distance traveled divided by the total time taken. Unlike average velocity, average speed takes into account the entire path covered by the object, providing a measure of how fast the object is moving without regard to direction.

Circular Motion

Circular motion involves the movement of an object along a curved, circular path. In the context of uniform circular motion, even though the object covers a significant distance (the circumference of the circle), its net displacement over one complete cycle is zero.

Transcript

Please give Ace some feedback