An object covered 40 meters in 2 seconds. Then, the average speed of the object is

$20 m s^{- 1}$

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$40 m s^{- 1}$

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$10 m s^{- 1}$

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$20 \sqrt{2} m s^{- 1}$

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Solution

The correct option is A
$20 m s^{- 1}$

Average speed = Total distance /Total time
= 40 m / 2 s
= 20 m/s.

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An object covered 40 meters in 2 seconds. Then, the average speed of the object is

The correct option is A 20ms−1 Average speed = Total distance /Total time = 40 m / 2 s = 20 m/s.

The correct option is A
$20 m s^{- 1}$

Average speed = Total distance /Total time
= 40 m / 2 s
= 20 m/s.