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# Unit A

### Kinematics

Magnitude Number and unit of the vector
Scalar Has a magnitude but no direction
Vector Have both magnitude and direction
Distance length of the path taken to move form one position to another, regardless of direction
Displacement the change in position
Speed the distance cover per unit time, a scalar quantity.
Velocity Displacement per unit time, a vector quantity.
Zero Average Velocity does not move at all for a period of time, or when it travels back to the original position.
Tangent straight line that touches a curve at only one point, represent the velocity at that instant.
Acceleration change in velocity per unit time, a vector quantity
Acceleration due to gravity acts vertically downwards 9.81m/s
Speeding up object travels with increasing velocities
Slowing down object travels with decreasing velocities
projectile is any object thrown into the air without any energy add on
Created by: Williamyu

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