Jamal is preparing for the marathon in November. The length of one full circuit of the track is 400 meters. Jamal runs around the track 4 times at a constant speed. 1. How much distance has he gone? 2. What was his displacement? 3. If it took him 800 seconds, what was his speed? 4. What was his velocity?
1. Total distance covered = 400 meters/circuit * 4 circuits = 1600 meters
2. Displacement is the shortest distance between the initial and final position. Since Jamal ended up where he started, his displacement is 0 meters.
3. Speed = Distance / Time = 1600 meters / 800 seconds = 2 m/s
4. Velocity is a vector quantity and is defined as the rate of change of displacement. Since his displacement is 0 meters, his velocity is also 0 m/s.