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Physics Ex

The document describes two experiments. The first experiment measures the length of a spring under different loads, with results graphed. The graph is used to determine the length of the spring with no load and with a 4.5N load, and to calculate the extension caused by a 4.5N load. The second experiment times a school bus traveling between palm trees spaced 25m apart along a highway. The bus's speed is calculated between the first two trees and its changing speed between subsequent trees is described.

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Tawana Mufandaedza
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79 views2 pages

Physics Ex

The document describes two experiments. The first experiment measures the length of a spring under different loads, with results graphed. The graph is used to determine the length of the spring with no load and with a 4.5N load, and to calculate the extension caused by a 4.5N load. The second experiment times a school bus traveling between palm trees spaced 25m apart along a highway. The bus's speed is calculated between the first two trees and its changing speed between subsequent trees is described.

Uploaded by

Tawana Mufandaedza
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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2 For

Examiner's
Use
1 The length of a spring is measured when various loads from 1.0 N to 6.0 N are hanging
from it. Fig. 1.1 gives a graph of the results.

25

20
length / cm

15

10

0
0 1 2 3 4 5 6
load / N

Fig. 1.1

Use the graph to find

(a) the length of the spring with no load attached,

length = ......................... cm [1]

(b) the length of the spring with 4.5 N attached,

length = ......................... cm [1]

(c) the extension caused by a 4.5 N load.

extension = ................... cm [2]

© UCLES 2005
3 For
Examiner's
Use
2 Palm trees are growing every 25 m alongside the highway in a holiday resort.

1 2 3 4

IGCSE

Fig. 2.1

The IGCSE school bus drives along the highway.

(a) It takes 2 s for the bus to travel between palm tree 1 and palm tree 2.

Calculate the average speed of the bus between tree 1 and tree 2.

average speed = .......................... [4]

(b) It takes more than 2 s for the bus to travel from tree 2 to tree 3.

State what this information indicates about the speed of the bus.

.................................................................................................................................... [1]

(c) The speed of the bus continues to do what you have said in (b). State how the time
taken to go from tree 3 to tree 4 compares with the time in (b).

The time taken to travel from tree 3 to tree 4 is ............................................. the time to
travel from tree 2 to tree 3. [1]

© UCLES 2005 [Turn over

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