Page 201 - Physics

Linear motion

5. In a race, cars travelled 200 times around a fi eld track with a length of 1 km.
(a) At the end of the race, what is the distance travelled by the winner?
(b) What is the winner’s displacement?
(c) If the winner completed the race in 3 hours, what is his/her average speed?

(d) What is his/her average velocity?
6. Figure 8.33 is the displacement–time graph representing the motion of an object.

6
Displacements (m) 4

2

0

-2 2 4 6 8 10 12 14 16 18

-4

-6
Time (s)

Figure 8.33

(a) Using the graph, copy and complete the following table:

Steps 1 2 3
Time interval 0 s – 5 s 5 s – 10 s 10 s – 18 s

Initial position, m i

Moving toward/away
from the origin or
stopped
Final position, m
f
Velocity increasing,
decreasing, constant

Average velocity, (m/s)

(b) At what time was the object at the origin?
(c) What was the average velocity for the entire motion?

195

Physics Form 1 Final.indd 195 16/10/2024 20:58