Question

answer this pls i will mark brainliest

Answer 1

time /2*speed of sound + answe... will get

Answer 2

Time taken for the echo to reach the child's ear = 4 seconds

Therefore, time taken by the sound to reach the cliff= 4/2 = 2 seconds

Speed of sound in air, v = 340 m/s

Distance of cliff from the child= vt

                                                 = 340  x   2

                                                 =  680 m.

Good Luck :)