15 points) Submarine sonar cannot only locate another ship nearby. It can also tell how fast it is going. Sub A at all stopped emits a sonar pulse in a burst of 850 Hz sound. The pulse reflects off the hull of another submarine, sub B which is moving along a course that is in line with sub A. The returning frequencyis higher andbeats against the original pulse with a beat frequency of 2.5 Hz. How fast is the sub B moving

Answer///air resistance,drag;

The answer is that they are composed mostly of liquid water.

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.