Answer:

1. As the mass increases, the acceleration decreases and the object accelerate slowly.

2. The relationship between mass and acceleration is that this two factors are affecting the force being exerted in an object. As for the given data in trial 1-3, there's a constant force 20N and the mass is increasing, I noticed that as the mass is increasing, the acceleration of an object decreases. This just means that if a body is lightweight, then it will accelerate or it will move faster, but if it's heavy, it will accelerate slowly.

Explanation:

Trial 1:

F = 20 N

m = 2 kg

a = F/m = 20N/2 kg = 20 kg•m/s² / 2 kg = 10 m/s²

Trial 2:

F = 20N

m = 4 kg

a = F/m = 20N/4 kg = 20 kg•m/s² / 4 kg = 5 m/s²

Trial 3:

F = 20 N

m = 5 kg

a = F/m = 20N/5 kg = 20 kg•m/s² / 5 kg = 4 m/s²