Question

b) A body covers 20m in first second, 25m in second and 45m in the third second. What is
the average speed of body?​

Answer 1

IN 1second=20m

In 2 second =(25+20)m=45m

In 3 seconds=(45+45)m=90m

So,we conclude that a body covers 90m in 3seconds

Average speed=total distance covered/total time taken

=90m/3sec

=30m/s

Answer 2

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