How can Newton’s first law of motion be obtained from the second law of motion?

Why does a glass vessel break when it falls on a hard floor, but it does not break when it falls on a carpet ?

Use Newton’s second law of motion to explain the following:

An athlete prefers to land on sand instead of hard floor while taking a high jump.

Draw graphs to show the dependence of (i) acceleration on force for a constant mass, and (ii) force on mass for a constant acceleration.