Modeule 1 - Kinematics- Motion in a straight line

Question 1

Compare a scaler and a vector

Answer 1

Scalers are quantities that have magnitude but not direction.
Vectors have both magnitude and direction

Question 2

Give examples of common scalers and **vectors **

Answer 2

Question 3

How can a vector be represented visually

Answer 3

by an arrow, with the length representing the magnitude

Question 4

The rule for adding multiple vectors

Answer 4

Head to tail

Question 5

The rule for subtracting vectors

Answer 5

Reverse the direction of the second vector and then add.

Question 6

The formula for average speed and average velocity

Answer 6

standard units m/s

Question 7

When converting from km/hr to m/s and vis versa

Answer 7

hint: 100km/hr is 27m/s

Question 8

What is the definition of accleration?

Answer 8

units are m/s/s

acceleration is a vector
u is inital velocity and v is final (u comes before v)

Question 9

What can be taken from a displacement time graph?

/-

Answer 9

1. How far from home you are (0,0)
2. gradient is equal to velocity
3. gradient +/- gives direction
4. hortizontal line is not moving
5. straight line velocity is constant, curved line and your velcoity is changing (ie accelerating)

Question 10

What can be taken from a velocity time graph

Answer 10

1. gradient is equal to acceleration
2. hortizontal line you have a constant velcoity
3. straight line you have a constant accleration
4. direction (above the axis and below the axis are a change in direction
5. the area undert he graph is equal to the displacement travelled

5. multiple the units from both axis (m/s x s) = m

Question 11

What are the quations of motion and what do the variables stand for?

note: 3 of these appear on your formula sheet

Answer 11