A boy runs along a circular track of radius 7 meters. If he completes one full round in 22 seconds, calculate his average speed and the magnitude of his average velocity for this round.

For one full round:
Distance covered = Circumference = 2πr = 2 * (22/7) * 7 m = 44 meters.
Time taken = 22 seconds.
Average Speed = Distance / Time = 44 m / 22 s = 2 m/s.

For one full round, the boy returns to his starting position. Therefore, his displacement is zero.
Average Velocity = Displacement / Time = 0 m / 22 s = 0 m/s.
The magnitude of his average velocity is 0 m/s.