1.

A man drives 100 m in the first 10 s, 90 m in the next 10 s and 120 m in 20 s, so the average speed is-?​

Answer» KNOW that speed=distance/time

:.AVERAGE speed=100/10+90/10+120/20

=10+9+6

=25m/s

I HOPE this will HELPFUL to you!!

THANK you!!



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