Kinematics in 1D: Study Notes
Understanding Motion:
1. Describing Motion:
● In Words: Describe the motion using everyday language (e.g., "The car is moving
forward at a constant speed").
● Graphically: Use graphs like position-time, velocity-time, and acceleration-time to
represent motion.
● Algebraically: Use equations to calculate and predict motion (e.g.,v= u + at)
BIG IDEAS:
● Scalar and Vector Quantities: Distinguishing between quantities that have
magnitude only (scalars) and those with magnitude and direction (vectors).
● Motion Graphs: Understanding and interpreting position-time, velocity-time, and
acceleration-time graphs.
● Equations for Uniformly Accelerated Motion: Applying equations to solve
problems involving objects moving with constant acceleration.
1. Definitions of Key Terms:
● Distance: Scalar quantity representing the total path length travelled by an object. No
direction involved.
Example: If you walk 5 metres north, then 3 metres south, the total distance is 8
metres.
● Position: A vector quantity that indicates the location of an object relative to a
reference point, often the origin.
Example: If you're 10 metres east of a starting point, your position is 10 m [E].
● Displacement: A vector quantity that refers to the change in position of an object. It
has both magnitude and direction.
Example: If you move 10 metres north and then 5 metres south, your displacement is
5 metres [N].
● Total Displacement: The overall change in position from the initial to the final
position.
Example: If you move 30 metres north, then 15 metres south, your total displacement
is 15 metres [N].
● Speed: A scalar quantity representing the rate at which an object covers distance. It is
calculated as distance divided by time.
Example: If you travel 50 metres in 10 seconds, your speed is 5 m/s.
Understanding Motion:
1. Describing Motion:
● In Words: Describe the motion using everyday language (e.g., "The car is moving
forward at a constant speed").
● Graphically: Use graphs like position-time, velocity-time, and acceleration-time to
represent motion.
● Algebraically: Use equations to calculate and predict motion (e.g.,v= u + at)
BIG IDEAS:
● Scalar and Vector Quantities: Distinguishing between quantities that have
magnitude only (scalars) and those with magnitude and direction (vectors).
● Motion Graphs: Understanding and interpreting position-time, velocity-time, and
acceleration-time graphs.
● Equations for Uniformly Accelerated Motion: Applying equations to solve
problems involving objects moving with constant acceleration.
1. Definitions of Key Terms:
● Distance: Scalar quantity representing the total path length travelled by an object. No
direction involved.
Example: If you walk 5 metres north, then 3 metres south, the total distance is 8
metres.
● Position: A vector quantity that indicates the location of an object relative to a
reference point, often the origin.
Example: If you're 10 metres east of a starting point, your position is 10 m [E].
● Displacement: A vector quantity that refers to the change in position of an object. It
has both magnitude and direction.
Example: If you move 10 metres north and then 5 metres south, your displacement is
5 metres [N].
● Total Displacement: The overall change in position from the initial to the final
position.
Example: If you move 30 metres north, then 15 metres south, your total displacement
is 15 metres [N].
● Speed: A scalar quantity representing the rate at which an object covers distance. It is
calculated as distance divided by time.
Example: If you travel 50 metres in 10 seconds, your speed is 5 m/s.
