Hello, λιεҗąиđ€ŗ!

We know that: .A person shoots at a barrel.

Two seconds later he hears the bullet hit the barrel.

The speed of sound is 340m/s and the average speed of the bullet is 650m/s.

What is the distance between the shooter and the barrel?

Let = distance from the shooter to the barrel (in meters).

. . At 650 m/s, the bullet takes: . seconds to reach the barrel.

. . At 340 m/s, the sound takes: . seconds to reach the shooter.

Since the total time is 2 seconds, we have: .

. . Now solve for . . .