NST1502
University of South Africa (Unisa)
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Examen
NST1502 Assignment 4 2025 (Answer Guide) - Due 2 October 2025
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--112septiembre 20252025/2026A+
- NST1502 Assignment 4 2025 (Answer Guide) - Due 2 October 2025 
QUESTION 1 
1.1 Define Kinetic energy. (2) 
Kinetic energy is the energy an object possesses due to its motion. It is directly proportional to the mass of the object and the square of its velocity, expressed mathematically as KE=12mv2KE = frac{1}{2}mv^2KE=21mv2 (Young & Freedman, 2019). 
1.2 Explain how energy is transferred in an ecosystem. (2) 
Energy in an ecosystem flows through food chains and food webs, beginning with produ...
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pablitoh11
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Examen
NST1502 Assignment 4 2025 (Answer Guide) - Due 2 October 2025
-
--112septiembre 20252025/2026A+
- NST1502 Assignment 4 2025 (Answer Guide) - Due 2 October 2025 
Contents 
QUESTION 1	2 
QUESTION 2	3 
QUESTION 3	4 
QUESTION 4	6 
QUESTION 5	7 
QUESTION 6	8 
Lesson Plan: Heat Transfer	8 
Objectives (5 marks)	8 
Teacher and Learners’ Activities (8 marks)	8 
Resources and Materials (2 marks)	9 
Assessment (5 marks)	9 
References	10
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