There are two types of energies that are taking place in the fruit is weighed in a spring scale. These are the gravitational potential energy and the elastic potential energy. The gravitational potential energy could be primarily attributed to the elevation of the fruit with respect to the ground.
What is the vertical component of its velocity at launch? v0y = 20*sin(53) = 16 m/s
Its horizontal component of velocity? v0x = 20*cos(53) = 12 m/s Neglect icing air friction, which of these components remains constant throughout the flight path? The horizontal component. (the vertical component is affected by gravity)
Which of these components determines the projectile's time in the air? The vertical component. (because the projectile falls down after t = 2*v0*sin(53)/g, you can see it doesn't depend on the horizontal component)
It does make sound, just because there are no receptors does not mean that an object does not make sound. For example, whales communicate ona frequency higher then our ears can hear, however, we know that they still make sound. Another example is thunder; If you were far away to see thunder but not hear it, does it make sound? It does. Objects make sound by vibrating, there is no connection to sound and the presence of a receptor.