Transverse Waves: Displacement of the medium is perpendicular to the direction of propagation of the wave.
Longitudinal Waves: Displacement of the medium is parallel to the direction of propagation of the wave.
Answer:
time =20s
Explanation:
Average speed = Distance/time
time = Distance / Average speed
Where Distance = 100meters and speed =5m/s
So,
time = 100m/5m/s
time =20s
I think it is A ..........