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Angela makes one lap around a 600 m track in a time of 45 s. Determine her (a) average speed and (b) average velocity​

Sagot :

Answer:

Speed is a scalar quantity which doesn’t depend on direction of motion.

=> Average speed = Distance/ Time = 270/30 = 9m/s

Velocity is a vector quantity having magnitude and direction. Since the runner runs 270m and returns to the same spot, net displacement is ZERO.

Average Velocity = Displacement/Time

= 0/30 = 0

Hope the difference is clear.

:-)