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13. An object, travelling along a straight path, covers 35 m distance in 4 seconds. In next 6
seconds, it covers 50 m distance. What is the average speed of the object?
(1) 3.5 m/s
(2) 4.5 m/s
(3) 7.5 m/s
(4) 8.5 m/s

Sagot :

Mayurpegasusidn

Answer:

(4) 8.5 m/s

Explanation:

You add both the meters together and both the seconds together and then divide them both.

Pihooidn

Answer:

(4) 8.5 m/s

Explanation:

Total distance = 35 + 50 = 85m

Total time = 4 + 6 = 10sec

average speed = total distance/ total time

ave. speed = 85/10 = 8.5 m/s

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