Question

Two Birds Started flying towards one another from two trees 100 ms apart, one flying along the direction of the wind and another against it. If the speed of the wind was 5kms/hour and the birds can fly at 10 kms/hour when is not blowing. Find after how many seconds do they meet? ​

Answer 1

or downward motion ;

u=0 m/s

a=10 m/s2

s=20 m

using v2- u2=2as

v= 20m/s

for upward motion;

v=0 m/s

a=10 m/s2

s=5 m using v2 – u2=2as

u= -10 m/s

I=mv – mu

I=20+10=30 m/d