Question #a28ee

1 Answer
Jul 8, 2016

Answer:

#10s#

Explanation:

Speed of train#=10ms^-1#, due north
Speed of bird#=5ms^-1#, due south
Relative speed of bird with respect to train#=5-(-10)#
#=15ms^-1#
Length of train#=150m#
We know that #"Time" ="Distance traveled"/"Speed"#
In the given problem

#"Time" =150/15=10s#
For relative speed.