1. Siti dropped a squash ball from a tall building.She then recorded the speed of theball
at various times. His results are shown in the table.
Time (s)
1
2
3
4
5
7
8
Speed (m/s)
8
13
16
19
21
22
22
a) Plot a graph of speed (y-axis) against time (x-axis). [5]
b) What is the shape of the graph? [1]
c) From the graph, determine the speed of the squash ball at the time equal to 4.5 s. [2]
d) Study the graph and predict the speed of the squash ball after 10 s. [1]
_______________________________________________________________________
e) Explain how you arrived at your answer in part (d) [1]
_______________________________________________________________________
2. Ahmad dropped a ping-pong ball from a tall building. He then recorded
the speed of the ball at various times. His results are shown in the table.
Time (s)
Speed (m/s)
1
9
2
16
3
21
4
26
5
30
6
32
8
33
a) Plot a graph of speed (y-axis) against time. [5]
b) What is the shape of the graph? [1]
________________________________________________________________________
c) From the graph, determine the speed of the ping-pong ball at the time
equal to 4.5 s. [2]
________________________________________________________________________
d) Study the graph and predict the speed of the ping-pong ball after 10 s. [1]
________________________________________________________________________
e) Explain how you arrived at your answer in part (d). [1]
________________________________________________________________________
Title: ___________________________________________________________________