A train moves a distance of 10 M with a constant speed of 40 m per second and Moves the next 5 metre constant speed of 30 metre per second calculate its average speed
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average speed =2xy/x+y
=2×40×30/40+30
2400/70
240/7
34.2m/sec is average speed
=2×40×30/40+30
2400/70
240/7
34.2m/sec is average speed
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