GRADE 11 PHYSICAL SCIENCES MARCH TEST
QUESTION 1
Various options are provided as possible answers to the following questions. Choose the correct
answer and write ONLY the LETTER (A-D) next to the QUESTION NUMBER (1.1-1.6) on your
folio paper. Example 1.7. D.
1.1 The graphs below show the relationship between the net force and the
acceleration for two masses X and Y.
Which one of the following statements is true?
A X has a greater mass.
B The bodies have equal mass.
C Y has a greater mass.
D The mass would not affect the gradient of the graph.
1.2 In which of the following cases would the resultant force acting on an object be equal to 0N.
A An object moving with constant acceleration.
B When the only force acting on the object is gravitational acceleration.
C An object that undergoes equal displacements every second.
D An object is moving with increasing acceleration.
1.3 Which of the statements below best describes Weightlessness?
A An object moving at constant velocity upwards from the ground.
B An object moving at constant velocity downwards from the ground.
C An object that is accelerated upwards away from the ground by a constant applied
force.
D An object accelerates downwards towards the Earth with an acceleration of 9.8m.s -2.
1.4 The inertia of an object …
A is greater if its mass is smaller.
B increases as the applied force on the object increases.
C is the resistance to any change in its state of motion.
D increases as the frictional force on the object increases.
1.5 An astronaut has a weight Fg on Earth. What distance, in terms of the radius of
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Grade 11 March Paper
, the Earth (r), will the astronaut be if his weight is a 1⁄4 of his weight (F g) on the
surface of the Earth?
A 2r
B R
C 1⁄2 r
D 1⁄4 r
1.6 A box is pushed forward with a force of 100N but does not move. A possible reason for this
is that:
A frictional force is also 100N.
B frictional force is more than 100N.
C frictional force is less than 100N.
D none of the above.
[12]
QUESTION 2
The grade 11 learners learn that there is more than one way to determine the resultant of two
vectors. One way is the component method. They want to use this method to find the resultant of
the forces acting on a bucket by the ropes from which the bucket is suspended. The bucket is
stationary.
2.1 Define the term resultant. (2)
2.2 The tension in rope P is 130N at an angle of 30° to the vertical and the tension in
Q is 91,92N at 45° to the vertical.
Calculate the MAGNITUDE of the:
2.2.1 Horizontal components of P and Q respectively. (4)
2.2.2 Vertical components of P and Q respectively. (4)
2.2.3 Resultant of the horizontal components. (1)
2.2.4 Resultant of the vertical components. (1)
2.2.5 Resultant of the forces exerted by P and Q on the bucket. (1)
2|Page www.summariessa.co.za Physical Sciences
Grade 11 March Paper
QUESTION 1
Various options are provided as possible answers to the following questions. Choose the correct
answer and write ONLY the LETTER (A-D) next to the QUESTION NUMBER (1.1-1.6) on your
folio paper. Example 1.7. D.
1.1 The graphs below show the relationship between the net force and the
acceleration for two masses X and Y.
Which one of the following statements is true?
A X has a greater mass.
B The bodies have equal mass.
C Y has a greater mass.
D The mass would not affect the gradient of the graph.
1.2 In which of the following cases would the resultant force acting on an object be equal to 0N.
A An object moving with constant acceleration.
B When the only force acting on the object is gravitational acceleration.
C An object that undergoes equal displacements every second.
D An object is moving with increasing acceleration.
1.3 Which of the statements below best describes Weightlessness?
A An object moving at constant velocity upwards from the ground.
B An object moving at constant velocity downwards from the ground.
C An object that is accelerated upwards away from the ground by a constant applied
force.
D An object accelerates downwards towards the Earth with an acceleration of 9.8m.s -2.
1.4 The inertia of an object …
A is greater if its mass is smaller.
B increases as the applied force on the object increases.
C is the resistance to any change in its state of motion.
D increases as the frictional force on the object increases.
1.5 An astronaut has a weight Fg on Earth. What distance, in terms of the radius of
1|Page www.summariessa.co.za Physical Sciences
Grade 11 March Paper
, the Earth (r), will the astronaut be if his weight is a 1⁄4 of his weight (F g) on the
surface of the Earth?
A 2r
B R
C 1⁄2 r
D 1⁄4 r
1.6 A box is pushed forward with a force of 100N but does not move. A possible reason for this
is that:
A frictional force is also 100N.
B frictional force is more than 100N.
C frictional force is less than 100N.
D none of the above.
[12]
QUESTION 2
The grade 11 learners learn that there is more than one way to determine the resultant of two
vectors. One way is the component method. They want to use this method to find the resultant of
the forces acting on a bucket by the ropes from which the bucket is suspended. The bucket is
stationary.
2.1 Define the term resultant. (2)
2.2 The tension in rope P is 130N at an angle of 30° to the vertical and the tension in
Q is 91,92N at 45° to the vertical.
Calculate the MAGNITUDE of the:
2.2.1 Horizontal components of P and Q respectively. (4)
2.2.2 Vertical components of P and Q respectively. (4)
2.2.3 Resultant of the horizontal components. (1)
2.2.4 Resultant of the vertical components. (1)
2.2.5 Resultant of the forces exerted by P and Q on the bucket. (1)
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Grade 11 March Paper
