vectors and scalars

Question 1

what is the meaning of displacement and what quantity is it and why

Answer 1

displacement is the distance an object moves in a straight line from a starting point to a finishing point

it’s a vector quantity because it contains SIZE AND DIRECTION

Question 2

what is the meaning of distance and what type of quantity is it and why

Answer 2

distance is how far an object moves

its a scalar quantity because it has size but not direction

Question 3

If an object travels 4 metres forwards then 2 metres backwards, what is the distance travelled? What is the objects displacement?

Answer 3

the distance travelled is 6 as 4 + 2 = 6

the displacement is 2 as the object is only 2 meters away from where it started

Question 4

what quantity is speed and why

Answer 4

speed is a scalar quantity because it only has size and no direction

Question 5

what quantity is velocity and why

Answer 5

velocity is a vector quantity as it has direction as well as speed

Question 6

what do scalar quantities only have

Answer 6

scalar quantities only have size

Question 7

what do vector quantities have

Answer 7

vector quantities have size and direction

Question 8

which of these are vector quantities:

Mass
Force
Acceleration 
Energy 
Velocity

Answer 8

Force
Acceleration
Velocity

Question 9

Jane pushes a table with a force of 10N towards the door, but her brother, Frank tries to stop her by pushing it with a force of 10 N at a right angle to Jane.
The effect of these forces is shown above.
Pythagoras’ theroem is used to work out the resultant force.

Answer 9

resultant for = |(10+10) = |(200) = 14.1

Question 10

which of these are scalar quantities:

Mass
Acceleration
velocity
energy
temperature
force

Answer 10

Maa
Temperature
energy