Assignment:
1. The following graph depicts the velocity vs. time of an object moving along a straight line.
(i) At what time is the object not moving?
(ii) At t = 2.5 s, is the object increasing or decreasing its speed?
(iii) What is the velocity of the object at t = 6 s?
(iv) What is the acceleration of the object at t = 7 s?
(v) Calculate the distance traveled by the object from t = 0 s to t = 3 s.
2. The following table depicts the position of an object at different times.
|
Time [s]
|
0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
|
Position [m]
|
0
|
2
|
4
|
8
|
6
|
2
|
4
|
4
|
4
|
(i) Calculate the average velocity between 1 s and 3 s.
(ii) Calculate the average velocity between 4 s and 6 s.
(ii) Calculate the average speed between 5 s and 6 s.