Blood flows through a major artery at 1.0 m/s over a distance of 0.50 m, then at

Question:

Blood flows through a major artery at 1.0 m/s over a distance of 0.50 m, then at 0.60 m/s for another 0.50 m through a smaller artery.
(a) Is the average speed of the blood 0.80 m/s, greater than 0.80 m/s, or less than 0.80 m/s? Explain.
(b) Verify your answer to part (a) by calculating the average speed.