Which of these properties change if the size of an object changes? density melting point solubility mass

The correct answer is 
Density 

In fact, the density of an object is the ratio between its mass m and its volume V:

if the size of the object changes, its volume V changes as well, therefore the density d must change.

.y₂ = 0.5704 m ,    y2= 44.47 m,

Explanation:,

For this exercise we will use the kinematics relations

Ball

        y₁ = y₀ + v₀₁ t

        y₀ = 11.0 m

        v₀₁ = 5.10 m / s

Pellet

        y₂ = 0 + v₀₂ t - ½ g t²

        V₀₂ = 39.0 m / s

At the meeting point the two bodies have the same height

            y₁ = y₂

           y₀ + v₀₁ t = v₀₂ t -1/2 g t²

            11 + 5.1 t = 39 t - ½ 9.8 t²

           4.9 t² - 33.9 t +11 = 0

           .t2 - 6,918 + 2,245 = 0

             t = [6,918 ±√ 6,918 2 - 4 2,245)] / 2

             t = [6,918 ± 6.2356.] / 2

             t₁ = 6.58 s

             t₂ = 0.3412 s

Let's calculate the positions for each time

        t₂ = 0.3412 s

              y₂ = 39 t - ½ 9.8 t2

              y₂ = 39 0.3112 - ½ 9.8 0.3412²

             y₂ = 0.5704 m

    .t1 = 6.58 s

             .₂ = 39 6.58 - ½ 9.8 6.58 ^ 2

              y2= 44.47 m