P2 - 5.2 Scalar & Vector Quantities

Question 1

What is a scalar

Answer 1

Physical quantities that only have a magnitude but no direction

Question 2

What is magnitude

Answer 2

The size of something

Question 3

What is the magnitude of a car speeding at 22m/s

Answer 3

The numerical value is 22 and so the magnitude is 22

Question 4

Is speed considered a vector or scalar quantity

Answer 4

Scalar

Question 5

Is distance considered a vector or scalar quantity

Answer 5

Scalar

Question 6

Is mass considered a vector or scalar quantity

Answer 6

Scalar

Question 7

Is temperature considered a vector or scalar quantity

Answer 7

Scalar

Question 8

Is time considered a vector or scalar quantity

Answer 8

Scalar

Question 9

What is a vector

Answer 9

Something with magnitude and a direction

Question 10

Is velocity considered a vector or scalar quantity

Answer 10

Vector

Question 11

Is displacement considered a vector or scalar quantity

Answer 11

Vector

Question 12

Is acceleration considered a vector or scalar quantity

Answer 12

Vector

Question 13

Is force considered a vector or scalar quantity

Answer 13

Vector

Question 14

Is momentum considered a vector or scalar quantity

Answer 14

Vector

Question 15

What is the difference between a scalar and a vector

Answer 15

Scalars have no direction whereas vectors do and both have magnitude

Question 16

Scenario:

If you travel a distance of 3km from point A, explain why this is a scalar

Answer 16

There is no specified direction and so we only have the magnitude (3km)

We could end up anywhere on a 3km circumference from point A

Question 17

Scenario:

If you travel a distance of 3km east from point A, explain why this is a vector

Answer 17

A direction (east) is specified so we have both direction and magnitude (3km) so we know exactly where we would end up because it gives the exact displacement

Question 18

When drawing a displacement what does the length of the arrow symbolise

Answer 18

The magnitude

Question 19

When drawing a displacement what does the way the arrow is pointing symbolise

Answer 19

The direction

Question 20

What would a negative vector be

Answer 20

For example if an arrow was pointing east you could draw another arrow that would be -2km east which tells us it is going in a backwards direction

Question 21

A women walks 500 m from her home to the shop. She then walks 200 m to the park and finally 400 m back to her home. What is the overall distance and displacement of her journey?

Answer 21

Distance = 1100m (500+200+400=1100)
Displacement = 0m (as she returns to her house, her displacement is 0 m, because she ends 0 m from where she started)