2.3 Speed and Velocity
| Example | Given | Required | Solution |
|---|---|---|---|
| Example 2.1: Reaction Time of a Batsman | Speed: 161.3 km/h Distance: 17.5 m | Reaction time (t) | \( t = \\frac﹛17.5 \text﹛m﹜﹛44.8 \text﹛m/s﹜﹜ = 0.39 \text﹛s﹜ \) |
| Example 2.2: Fastest Train in the World | Distance: 30 km Time: 7 min 30 s | Speed (v) | \( v = \\frac﹛30,000 \text﹛m﹜﹛450 \text﹛s﹜﹜ = 66.67 \text﹛m/s﹜ \) \( v = 240.01 \text﹛km/h﹜ \) |
| Example 2.3: Velocity of a Car | Distance: 800 m Displacement: 600 m | Average Speed and Velocity | Speed: \( v_ave = 20 \text﹛m/s﹜ \) Velocity: \( v_ave = 15 \text﹛m/s﹜ \) |