Question

If a passing boat can only see a flare that is at least 100 m above the life raft, for how long will the flare be visible, rounded to the nearest second?

Answer 1

To provide an accurate duration of the flare's visibility to a passing boat, specific details such as initial height and velocity are needed, which are not supplied in the problem statement.

Step-by-step explanation:

Visibility Duration of the Flare

To determine the visibility duration of the flare, we first need the information about the initial height, velocity, and acceleration due to gravity to model the motion of the flare. However, the problem as stated does not provide sufficient information to calculate the duration of visibility of the flare. Normally, this is a standard physics problem involving kinematics and the equations of motion, specifically, the time a projectile takes to reach a certain height or fall from that height. The base equation used is:

s = ut + 1/2at²,
where s is the displacement, u is the initial velocity, t is the time, and a is the acceleration. To provide an accurate answer, additional data such as the initial height of the flare above the life raft when launched, and its initial velocity would be crucial.