Which of the following statements regarding the motor unit is true:

a. each motor unit can consist of a different number of muscle fibers.
b. all muscle fibers of one particular motor unit are always the same fiber type.
c. a muscle can be composed of a different number of motor units.
d. each muscle fiber can be innervated by only one motor unit.
e. all are correct.

It is increased due to the doppler effect. (apex)

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.

Ineed more information about  the question