A100-meter sprint is a race using only the straight side of a racetrack. a 400-meter sprint is a race that makes one complete lap around a racetrack. why are velocity and speed the same for a 100-m sprint but not a 400-m sprint?

Answer with Explanation:

velocity and speed are the same for a 100-m sprint but not a 400-m sprint because velocity is Displacement/Time i.e since in 100-m sprint race, the athlete run from point A to B on a straight line (distance traveled in a specific direction - Displacement), but in 400-m sprint race, the athlete run from point A back to point A (coming back to the origin), the athlete didn't just travel in one direction.

Therefore their velocity and speed can't be the same since they don't have equal displacement.

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm