Q. A boy cover a triangular fields whose side is 4m and 6 meters and its perimeter is 18 meters 5 minutes and 3 seconds. Find the speed of a boy and if a boy travel another 15 meters, calculate the distance and displacement.
Answers
Given : A boy cover a triangular fields whose side is 4m and 6 meters and its perimeter is 18 meters in 5 minutes and 3 seconds.
To Find : the speed of a boy
boy travel another 15 meters, calculate the distance and displacement.
Solution:
A boy cover a triangular fields whose side is 4m and 6 meters and its perimeter is 18 meters
Third side = 18 - ( 4 + 6) = 8 m
Distance = 18 m
Time = 5 min 3 sec = 303 sec
Speed = Distance / Time = 18 / 303 = 0.0594 m/s
Distance covered = 18 + 15 = 33 m
after 18 m displacement is zero
travel another 15 meters, 3 m left to reach 18 m
Hence Displacement = 3 m
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