1.
a) OA: Guza moves away from the starting point at a constant speed. AB: Guza stops (distance remains constant). BC: Guza continues moving away from the starting point at a constant speed, slower than in OA. CD: Guza stops again. DE: Guza moves back towards the starting point at a constant speed, faster than in OA or BC.
b) DE
c) i. OA: 0.8 m/s ii. BC: 0.4 m/s iii. DE: 1.5 m/s
2.
a) OA: The train accelerates uniformly from rest. AB: The train moves at a constant velocity. BC: The train accelerates uniformly to a higher velocity. CD: The train moves at a new constant velocity. DE: The train decelerates uniformly to rest.
b) Greatest acceleration: 2.0 m/s² (during OA)
c) Deceleration: 0.5 m/s² (during DE)
d) Total distance travelled: 10,500 m
3.
Gradient: Speed; Acceleration
Horizontal Line: Stationary (constant distance); Constant velocity
Upward Line: Moving away at constant speed; Accelerating
Downward Line: Moving towards at constant speed; Decelerating
Area under the Graph: NOT APPLICABLE; Distance travelled
Parent Tip: Review the logic above to help your child master the concept of motion graph worksheet.
