Two boat are travelling with speed of 36 km/hr and 54 km/hr respectively towards each other. What is the distance (in meters) between the two boats one second before they collide?
Speed of Boat A= 36×5/18 m/s. = 10 m/s.
Speed of Boat B = 54×5/19 m/s = 15m/s.
Distance between the two boats one second before they collide= sum of the
Distance travelled by each boat in one second.
= 10 m/s*1s + 15 m/s* 1 s
= 10 m+ 15 m
= 25 m