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Physics Form 4 Chapter 2 Force and Motion I
2. Figure 2.1 shows the arrangement of apparatus in an experiment to determine the acceleration due to gravity.
Figure 2.2 shows the ticker tape that is produced from the experiment. The ticker timer has a frequency of
50 Hz.
G-clamp
Ticker timer

Ticker tape
A.C. power
supply
Stool
22.5 cm
Weight
Table
Chapter
2 Polystyrene sheet 4.5 cm

Figure 2.1 Figure 2.2
(a) What is meant by acceleration? [1 mark]
(b) From Figure 2.2, determine the value of g, the acceleration due to gravity. [3 marks]
(c) Give two reasons why the value of g determined from 2(b) is smaller than the actual value. [2 marks]

3. Figure 3.1 shows a cyclist cycling from a road to a beach. In the first 5 seconds, he cycles on the road and
for the next 15 seconds, he cycles on the beach. Figure 3.2 shows the motion graph of his journey.

v / m s –1

15

10
Beach

5
Road
0 t / s
5 10 15 20
Figure 3.1 Figure 3.2
(a) Calculate the acceleration of the cyclist when he is on
(i) the road, and
(ii) the beach. [3 marks]
(b) He uses the same force to cycle on both the road and the beach. Explain why there is a difference in
HOTS the acceleration in the two parts of his journey. [2 marks]
(c) Calculate the total distance travelled by the cyclist in the 20 seconds. [3 marks]

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