O-LevelPhysicsForces5054/22 · May/June 2021 · Q15 Marks

State the difference between a scalar quantity and a vector quantity.

(a)(i)State the difference between a scalar quantity and a vector quantity.[1]
(a)(ii)State two examples of each type of quantity. scalar quantity 1 2 vector quantity 1 2[2]
(b)Fig. 1.1 shows the direction and size of two vectors P and Q. [Figure 1.1] In the space next to Fig. 1.1, draw a labelled vector diagram to show the resultant vector obtained by adding vector P to vector Q. Draw vector P, vector Q and the resultant vector to the same scale as in Fig. 1.1.[2]

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Mark scheme

Marking points from the official mark scheme (May/June 2021). The mark or mark type is shown in brackets.

[B1] vector quantity has direction / scalar quantity does not have direction
[B1] any two scalar quantities, e.g. mass, distance / length, time, speed
[B1] any two vector quantities, e.g. velocity, acceleration, displacement, force / weight
[B1] P and Q drawn in correct directions to meet at a point with correct size
[B1] triangle or parallelogram shown with all three vectors in correct directions and the resultant clear (e.g. as another vector)

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