TEKS 7.7C: Measure, record, & interpret object motion with distance-time graphs
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TEKS 7.7C: The student is expected to measure, record, and interpret an object's motion using distance-time graphs.
TEKS 7.7C Multi-stage motion analysis and graph calculation. Have each team enter their secret wager before revealing the final prompt!
An express train travels 120 meters in 12 seconds, stops at a station for 8 seconds to load passengers, and then travels back 120 meters to its depot in 10 seconds.
1. Segment 1 Speed: $120\text{m} \div 12\text{s} = \mathbf{10\text{ m/s}}$
2. Total Distance: $120\text{m} + 0\text{m} + 120\text{m} = \mathbf{240\text{ meters}}$
3. Overall Average Speed: $\text{Total Distance} \div \text{Total Time} = 240\text{m} \div 30\text{s} = \mathbf{8\text{ m/s}}$