Question

Imagine that a small boy and his much larger father are enjoying a winter morning, sliding along the ice on a nearby playground. Make a hypothesis: Who do you think would be slowed down more by frictional forces on the ice, the small child or the large adult?

Answer 1

You can write an hypothesis such as this:
The weight of an object has effects on the operating frictional force, the greater the weight, the higher the operating frictional force.
The father is the one with the higher weight while the son has the lower weight. The operating frictional force is the friction that their weights exert.

Answer 2

The larger father, the more weight the more friction. Hope this helped.