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.

diagram of helicopter



In this time the signal travels a distance \(d\), given by:

(A)   \(d = vt\)

(B)   \(d = v/t\)

(C)   \(d = t/v\)