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Unit A
Kinematics
| Question | Answer |
|---|---|
| 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 |