Q1 MCQ Drill: 2020 Physical Sciences P1 (2020 NSC October/November National Examination)

Physical Sciences Past Paper Question 1 Drill Level 1: Knowledge & Recall

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5 multiple-choice questions taken verbatim from Section A of the official 2020 NSC October/November National Examination Physical Sciences Paper 1, auto-marked against the official marking guideline. Questions that rely on diagrams or graphs are excluded - see the full paper for those.

Question 1 of 5 2 Marks

The rate of change of momentum of an object is equal to the …

A. impulse on the object.

B. net force acting on the object.

C. product of the object's mass and its change in velocity.

D. product of the net force acting on the object and its acceleration.

Question 2 of 5 2 Marks

The gravitational acceleration on the surface of planet X with mass M and radius r is g. The gravitational acceleration on the surface of planet Y with mass 2M and radius ½r is …

A. ½g

B. g

C. 4g

D. 8g

Question 3 of 5 2 Marks

The base SI unit of the physical quantity 'work' is …

A. kg∙m∙s-1

B. kg∙m2∙s2

C. kg∙m2∙s-2

D. kg∙m∙s-2

Question 4 of 5 2 Marks

The siren of a police car, moving in front of a truck, emits sound waves of frequency f. Both vehicles are travelling at the same constant velocity. The frequency of the sound heard by the driver of the truck is …

A. f.

B. zero.

C. greater than f.

D. smaller than f.

Question 5 of 5 2 Marks

An AC generator generates a current with a frequency of 50 Hz. The number of times that the maximum (peak) current is produced in one second is …

A. 25.

B. 50.

C. 75.

D. 100.

Q1 MCQ Drill: 2020 Physical Sciences P1 (2020 NSC October/November National Examination)

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