Question 6
In activity 18.2 a plastic bottle was filled with sand one quarter, then one half, then completely, and dropped onto clay from about 1 m every time. What was being changed?
The right answer is the one marked above.
The mass of the falling object. Adding sand increases the mass. The height was deliberately kept at about 1 m so that mass was the only thing that varied.
Activity 18.1 did the opposite — it kept the object the same and changed the height. Between them the two activities demonstrate the m and the h of m g h.