A road runs midway between two parallel rows of buildings. A motorist moving with a speed of 36 km/hr sounds the horn. He hears the echo one second after he has sounded the horn. Then the distance between the two rows of buildings, will be (Velocity of sound is 330 m/s)

A road runs midway between two parallel rows of buildings. A motorist moving with a speed of 36 Km/h sounds the horn. He hears the echo one second after he has sounded the horn: Then the distance between the two rows of buildings is. (Velocity of sound in air is 330 m/s)

A scooterist moving with a velocity of 36 kmph towards a fort wall and blows a horn. If he hears the echo after 3s, then the distance at which horn is blown from the wall is (Velocity of sound in air = 340 m/s)

A man standing between two parallel cliffs fires a gun. If he hears the first echo after 2s and the next after 5s, the distance between the two cliffs is (Velocity of sound in air is 350 m/s)