Higher Physics: Homework 2 Vectors.
1)
a) Define
i)
a scalar quantity
1
ii)
a vector quantity.
1
iii)
describe the difference between a scalar and vector quantity
1
b) Put the following quantities into a table with two headings “vector” and “Scalar”;
distance, speed, velocity, acceleration, energy, colour, temperature,
displacement, force, mass, weight, time.
2)
3)
4
A sparrow flies 500m North, turns and walks 300m South. This takes 200s.
a)
What distance has it flown ?
1
b)
What is its final displacement ?
2
c)
Calculate the sparrows average speed.
3
d)
Calculate the sparrows average velocity ?
3
Calculate the resultant of the two forces acting as shown below.
(Remember to include the angle of the resultant).
3
5N
8N
4)
A plane is flying due North at 100kmh-1 while a wind of 40kmh-1blows from
East to West.
5
Calculate the velocity of the plane relative to the ground ?
3
When flying out from airports, jets are often observed not to be taking off
parallel to the direction of the runway.
Using your knowledge of physics, explain why this is happening.
6)
3
A ship travels 20km due East then turns 20o towards North (i.e. to a bearing of 070o)
and travels a further 30km.
What is its final displacement? (you must include a magnitude and a bearing).
a)
Sketch the vectors acting on the ship
1
This should NOT be to scale but should roughly indicate
the size of the vectors and their direction.
b)
BY SCALE DIAGRAM ONLY
Calculate the final displacement of the ship.
You should indicate the scale used.
4
TOTAL
30