Question

A bird flies AT speed of 20ms/s for 10s.afterwards it rests on a tree for 10s and then flies AT speed of 10 m/s for 10s. Average speed of the bird for whole trip is

Answer 1

Answer:10m/s

Explanation: Distance travelled in the first flight= speed x time = 20 x 10= 200m

Distance travelled in the second flight = 10 × 10 = 100m

Average speed of the whole trip = Total distance travelled ÷ total time taken

=( 200m + 100m) /(10s + 10s + 10s)

= 300/30 m/s

= 10m/s (Ans)