Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 40

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IMPORTANT

Earn 100

The position vector of a moving object has components $(r_{x} = 2 unit, r_{y} = 2 unit)$ initially. After a certain time the position vector has components $(r_{x} = 4 unit, r_{y} = 8 unit)$ . Find the displacement vector.

Important Questions on Measurement and Uncertainties

MEDIUM

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 41

The diagram shows the velocity vector of a particle moving in a circle with speed $10 m s^{- 1}$ at two separate points. The velocity vector is tangential to the circle. Find the vector representing the change in the velocity vector.

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Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 42

In a certain collision, the momentum vector of a particle changes direction but not magnitude. Let

p

be the momentum vector of a particle suffering an elastic collision and changing direction by

30 °

. Find, in terms of

p (= | p |)

, the magnitude of the vector representing the change in the momentum vector:

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Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Test yourself>Q 45

Vector

A

has a magnitude of

6.00 units

and is directed at

60 °

to the positive x-axis. Vector

B

has a magnitude of

6.00 units

and is directed at

120 °

to the positive x-axis. Find the magnitude and direction of vector

C

such that

A + B + C = 0

. Place the three vectors so that one begins where the previous ends. What do you observe?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 1

What is the equivalent of

80 years

in

seconds

?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 2

A book has

500

pages (printed on both sides). The width of the book excluding the covers is

2.5 cm

. What is the approximate width in

mm

of one sheet of paper?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 3

The speed of sound is approximately

330 m s^{- 1}

. A storm is

3 km

away. Approximately how much later after seeing lightning will thunder be heard?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 4

In which of the following diagrams do the three forces add up to zero?

EASY

Diploma

IMPORTANT

Physics for the IB Diploma 6th Edition>Chapter 1 - Measurement and Uncertainties>Exam-style questions>Q 5

Three forces act on a body as shown.

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