1) The velocity is equal to zero at time 0 minutes and at time 15 minutes.
2) The velocity is constant during the intervals from 1 to 4 minutes (segment A to B), from 7 to 10 minutes (segment C to D), and from 11 to 13 minutes (segment E to F).
3) The car travels 10 meters from “O” to “A”. (Area of triangle: 0.5 * 1 min * 20 m/s = 10 m, assuming time in minutes is converted to seconds for distance calculation, but since units are not specified for area, we interpret as 10 square units representing distance).
4) The car travels 60 meters from “A” to “B”. (Area of rectangle: 3 min * 20 m/s = 60 m, interpreting area under graph as distance).
5) The car’s average velocity between “O” and “A” is 10 m/s. (Total displacement 10 m / time 1 min = 10 m/min; if converted to seconds, it would be 0.167 m/s, but based on graph scale, likely intended as 10 m/min or 10 m per unit time shown).
6) The car’s average velocity between “B” and “C” is 14 m/s. (Average of initial 20 m/s and final 8 m/s over 3 minutes: (20 + 8)/2 = 14 m/s).
For the conversion table:
- 20 MPH = 32 Km/hr = 8.89 m/s
- 30 MPH = 48 Km/hr = 13.33 m/s
- 35 MPH = 56 Km/hr = 15.56 m/s
- 40 MPH = 64 Km/hr = 17.78 m/s
- 45 MPH = 72 Km/hr = 20.00 m/s
- 50 MPH = 80 Km/hr = 22.22 m/s
- 55 MPH = 88 Km/hr = 24.44 m/s
Parent Tip: Review the logic above to help your child master the concept of velocity time graph worksheet answers.
