Physics - IB Documents

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M19/4/PHYSI/HPM/ENG/TZ2/XX

Physics Higher level Paper 1

Friday 17 May 2019 (afternoon)

1 hour

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

answer sheet provided. ? A clean copy of the physics data booklet is required for this paper. ? The maximum mark for this examination paper is [40 marks].

19 pages

2219?6513 ? International Baccalaureate Organization 2019

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M19/4/PHYSI/HPM/ENG/TZ2/XX

1. A student measures the radius R of a circular plate to determine its area. The absolute uncertainty in R is R.

What is the fractional uncertainty in the area of the plate?

A. 2R R

B.

R 2 R

C. 2R R

D.

R R

2

2. A proton has momentum 10-20Ns and the uncertainty in the position of the proton is 10-10m. What is the minimum fractional uncertainty in the momentum of this proton? A. 5 ? 10-25 B. 5 ? 10-15 C. 5 ? 10-5

D. 2 ? 104

3. A boy throws a ball horizontally at a speed of 15ms-1 from the top of a cliff that is 80m above the surface of the sea. Air resistance is negligible. What is the distance from the bottom of the cliff to the point where the ball lands in the sea? A. 45m B. 60m C. 80m D. 240m

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M19/4/PHYSI/HPM/ENG/TZ2/XX

4. A book is at rest on a table. What is a pair of action?reaction forces for this situation according to Newton's third law of motion?

Force 1

Force 2

A.

the force of the book on the table

the force of the book on the Earth

B.

the force of the table on the Earth

the force of the book on the table

C.

the force of the Earth on the book

the force of the book on the Earth

D.

the force of the Earth on the book

the force of the table on the book

5. An object has a weight of 6.10 ? 102N. What is the change in gravitational potential energy of the object when it moves through 8.0m vertically? A. 5kJ B. 4.9kJ C. 4.88kJ D. 4.880kJ

Turn over

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M19/4/PHYSI/HPM/ENG/TZ2/XX

6. The graph shows the variation of momentum with time for an object.

20

momentum / kg m s-1

0

0

2.0

4.0

time / s

What net force acts on the object for the first 2.0 s and for the second 2.0 s of the motion?

Force for first 2.0s / N

Force for second 2.0s / N

A.

10

0

B.

20

40

C.

10

40

D.

20

0

7. A table-tennis ball of mass 3g is fired with a speed of 10ms-1 from a stationary toy gun of mass 0.600kg. The gun and ball are an isolated system.

What are the recoil speed of the toy gun and the total momentum of the system immediately after the gun is fired?

Recoil speed of the toy gun / ms-1

Total momentum of the system / kgms-1

A.

0.05

0

B.

0.05

0.03

C.

0.5

0

D.

0.5

0.03

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