Chapter 2: Kinematics

Question 1

What are the two quantities?

Answer 1

1. Scalar

2. Vector

Question 2

What are scalar quantities?(definition, example)

Answer 2

Physical quantities that have magnitude only
Exp:
1. Distance
2. Speed
3. Mass
4. Energy
5. Time

Question 3

What are vector quantities?(defintion, example)

Answer 3

Physical quantities that have both magnitude and direction 
Exp:
1. Displacement 
2. Velocity 
3. Acceleration 
4. Force

Question 4

What is distance?(definition, quantity, SI unit)

Answer 4

The total length covered by a moving object regardless of the direction of motion
Scalar
Metre (m)

Question 5

What is displacement?(defintion, quantity, SI unit)

Answer 5

The distance measured in a straight line in a specified direction
Vector
Metre (m)

Question 6

What is speed?(defintion, quantity, SI unit, formula, instantaneous)

Answer 6

Distance moved per unit time 
Scalar 
Metre per second (m s^-1)
Speed = distance / time 
The speed of an object at a particular instant

Question 7

What is velocity?(defintion, quantity, SI unit, formula)

Answer 7

Rate of change of displacement
Vector
Metre per second (m s ^-1)
Velocity = displacement / time

Question 8

What is acceleration?(defintion, quantity, SI unit, formula, deceleration, uniform)

Answer 8

Rate of change of velocity 
Vector 
metre per second (m s^-2)
a = v - u / t
Object when velocity decreases over time 
Constant rate of change of velocity