Balance on a bicycle is a matter of constantly correcting against falls, and it's easier when the speed is higher because the inertia of moving forward overcomes the need for corrective actions.
1) That old man is Aksionov.
2) The speaker is asking about the truth of digging an escape hole .
3) The speaker means the prison's wall.
Time taken (t) = 3 sec
Velocity of sound (v) = 332 m/s
Distance travelled (d) = ?
We know,
d = v x t = 332 x 3 = 996 m
Hence, the source of thunder is about 996 m far from the boy.

You can design such dialog boxes using the following website.
https://carbon.now.sh
#include<stdio.h>
#include<conio.h>
#include<string.h>
int main() {
int i, nextTerm;
int t1 = 2, t2 = 2;
nextTerm = t1+t2;
printf("%d, %d, ", t1, t2);
for (i = 3; i <= 10; ++i) {
printf("%d, ", nextTerm);
t1 = t2;
t2 = nextTerm;
nextTerm = t1 + t2;
}
return 0;
}
