medium · Act science
A student measured the time for a marble to roll down a ramp set at different heights. The results were: Height 10 cm → 1.8 s; Height 20 cm → 1.3 s; Height 30 cm → 1.0 s; Height 40 cm → 0.8 s.
Based on this trend, what would be the most likely roll time at a height of 25 cm?
- Approximately 0.7 s, faster than at 40 cm
- Approximately 1.15 s, between the 20 cm and 30 cm times
- Approximately 1.8 s, the same as at 10 cm
- Approximately 2.0 s, slower than at 10 cm
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