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Define 'average speed'. An object moves …

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Define 'average speed'. An object moves with a uniform speed of 10m/s for 5 seconds and then with a uniform speed of5m/s for 10 seconds. Find it's average speed.

Posted by . . 4 years, 2 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 2 months ago

The distance covered by a body per unit time is called average speed or speed
Speed = distance/Time
1st case:-
10 m/s for 5 seconds
s = vt
= 10×5
= 50m
2nd case:-
5 m/s for 10 seconds
s = vt
= 5×10
= 50 m
Average velocity = total distance/total time
= 50+50/5+10
= 100/15
= 6.66 m/s

1Thank You

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CBSE > Class 09 > Science