Q 1770201116.     Choose the correct
option from these given below. A bird flies North at 20
m/s for 15 s. It rests for 5 s and then flies South at 25
m/s for 10 s.

The average speed for the whole trip is

A

`18.34` `m//s`

B

`16` `m//s`

C

`1.67` `m//s`

D

`2` `m//s`

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