The scatter graph in Figure 1 shows the relationship between the mass of the object and the distance it travels when dropped from a height of 1.5m - Leaving Cert Chemistry - Question 1 - 2010

One possible hypothesis could be: 'As the mass of the object increases, the distance it travels when dropped will decrease due to greater gravitational force acting on it, causing it to accelerate faster towards the ground.'

The distance travelled may vary with mass as heavier objects experience a stronger gravitational pull, which might lead them to accelerate more rapidly. However, other factors such as air resistance and shape can also play a role. Therefore, while one might expect heavier objects to travel further if dropped, the influence of air resistance could counteract this effect, leading to varying outcomes.

The range of valid values for mass should be specified based on the materials used in the experiment, ensuring that they are appropriate for the conditions. For example, a valid range could be 0.1 kg to 5 kg, depending on the specific experiment design and safety considerations.