Problem 2-98 - Linear Kinematics - Part 3 - (c)

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.

No. That is not the correct relationship between $d$, $v$ and $t$.

Try again.