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 Grade 7 Video Lessons on Measurement: Time, Distance and Speed

To determine the flying speed of a bird, Njukia scared a bird that had perched on a certain tree. He timed it as it flew from the tree to another and found that it took 6 seconds. The distance between the two trees was 144 m.
a) Calculate the speed of the bird in metres per second.
b) Convert the speed in metres per second to kilometres per hour.

 (4m 49s)
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