VCE Physics Unit 3 Trial Examination Question and Answer Booklet
SECTION A – MULTIPLE-CHOICE QUESTIONS
Instructions for Section A
Answer all questions in pencil on the answer sheet provided for multiple-choice questions.
Choose the response that is correct or that best answers the question.
A correct answer scores 1; an incorrect answer scores 0.
Marks will not be deducted for incorrect answers.
No marks will be given if more than one answer is completed for any question.
Unless otherwise indicated, the diagrams in this booklet are not drawn to scale.
–2
Take the value of g to be 9.8 m s .
Question 1
A 2 tonne decommissioned satellite is travelling in an elliptical orbit around Earth. At its closest point it is
7000 km from the centre of Earth and at its furthest point it is 9000 km from the centre of Earth.
–1
gravitational field strength (N kg )
10.0
9.0
8.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
6.0
7.0
8.0
9.0
6
distance from the centre of Earth (× 10 m)
Using the graph shown above, what is the closest estimate of the change in gravitational potential energy
of the satellite as it moves from its closest point from the centre of Earth to its furthest point from the centre
of Earth?
1
A.
1.4 × 10 J
B.
1.4 × 10 J
C.
2.8 × 10 J
D.
2.8 × 10
2
7
7
10
J
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