Physics - IB Documents

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N19/4/PHYSI/SPM/ENG/TZ0/XX

Physics Standard level Paper 1

Tuesday 5 November 2019 (afternoon)

45 minutes

Instructions to candidates yyDo not open this examination paper until instructed to do so. yyAnswer all the questions. yyFor each question, choose the answer you consider to be the best and indicate your choice on

the answer sheet provided. yyA clean copy of the physics data booklet is required for this paper. yyThe maximum mark for this examination paper is [30 marks].

14 pages

8819?6504 ? International Baccalaureate Organization 2019

? 2 ? 1. Which quantity has the fundamental SI units of kgm?1s?2?

A. Energy B. Force C. Momentum D. Pressure

N19/4/PHYSI/SPM/ENG/TZ0/XX

2. An object is held in equilibrium by three forces of magnitude F, G and H that act at a point in the same plane.

F

G

H

Three equations for these forces are I. F cos = G II. F = G cos + H sin III. F = G + H

Which equations are correct? A. I and II only B. I and III only C. II and III only D. I, II and III

? 3 ?

N19/4/PHYSI/SPM/ENG/TZ0/XX

3. Two forces act along a straight line on an object that is initially at rest. One force is constant; the second force is in the opposite direction and proportional to the velocity of the object.

varying force

constant force

object

What is correct about the motion of the object? A. The acceleration increases from zero to a maximum. B. The acceleration increases from zero to a maximum and then decreases. C. The velocity increases from zero to a maximum. D. The velocity increases from zero to a maximum and then decreases.

4. The variation with time t of the acceleration a of an object is shown. 3.0

2.0 a / m s?2

1.0

0

0

2

4

6

t / s

What is the change in velocity of the object from t = 0 to t = 6s? A. 6ms?1 B. 8ms?1 C. 10ms?1 D. 14ms?1

Turn over

? 4 ?

N19/4/PHYSI/SPM/ENG/TZ0/XX

5. A climber of mass m slides down a vertical rope with an average acceleration a. What is the average frictional force exerted by the rope on the climber?

A. mg B. m(g + a) C. m(g - a)

D. ma

6. A cube slides down the surface of a ramp at a constant velocity. What is the magnitude of the frictional force that acts on the cube due to the surface? A. The weight of the cube B. The component of weight of the cube parallel to the plane C. The component of weight of the cube perpendicular to the plane D. The component of the normal reaction at the surface parallel to the plane

7. A ball is thrown vertically upwards. Air resistance is negligible. What is the variation with time t of the kinetic energy Ek of the ball?

A. Ek

B. Ek

0

0

t

0

0

t

C. Ek

D. Ek

0

0

t

0

0

t

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