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1.4. Scalars and vectors
A subsection of Physics, 9702, through 1. Physical quantities and units
Listing 10 of 24 questions
A list of quantities that are either scalars or vectors is shown in . quantity scalar vector distance ✓ energy momentum power time weight Complete to indicate whether each quantity is a scalar or a vector. One line has been completed as an example. A girl runs 120 m due north in 15 s. She then runs 80 m due east in 12 s. Sketch a vector diagram to show the path taken by the girl. Draw and label her resultant displacement R. north east Calculate, for the girl, 1. the average speed, average speed = m s–1 2. the magnitude of the average velocity v and its angle with respect to the direction of the initial path. magnitude of v = m s–1 angle = °
9702_s16_qp_23
THEORY
2016
Paper 2, Variant 3
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State what is meant by a scalar quantity and by a vector quantity. scalar: vector: Complete to indicate whether each of the quantities is a vector or a scalar. quantity vector or scalar power temperature momentum An aircraft is travelling in wind. shows the velocities for the aircraft in still air and for the wind. 65° west aircraft velocity in still air 95 m s–1 wind velocity 28 m s–1 The velocity of the aircraft in still air is 95 m s–1 to the west. The velocity of the wind is 28 m s–1 from 65° south of east. On , draw an arrow, labelled R, in the direction of the resultant velocity of the aircraft. Determine the magnitude of the resultant velocity of the aircraft. magnitude of velocity = m s–1
9702_s18_qp_21
THEORY
2018
Paper 2, Variant 1
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Questions Discovered
24