Problem 2-98 - Linear Kinematics - Part 2 - (a)

A helicopter is traveling horizontally, straight toward a cliff. When $700\; m$ from the cliff, it sends a sonar signal and $3.4\; s$ later receives the reflected signal. Assuming the signal travels at $350 \;m/s$, determine the speed of the helicopter.

Correct.

In this time the signal travels a distance $d$, given by:

(A)   $d = vt$

(B)   $d = v/t$

(C)   $d = t/v$