Chapter 2 Kinematics Flashcards
Vector Quantities are physical quantities that have what and what? Example are?
Magnitude and Direction Examples are Velocity, Displacement, Acceleration, Force, Weight
Velocity defines as?
Rate of change of displacement/Displacement per unit time
Average Distance =
Total distance travelled / Total time
When speed remains constant and movement remains in same direction, what happen to the VELOCITY?
Remain Constant
When speed increase or decreases OR movement changes to a different direction, what happen to the VELOCITY?
Velocity Changes
Speed =
Distance / Time
Acceleration defines as?
Rate of change of Velocity / Velocity per unit time
Acceleration =
Final Velocity - Initial Velocity / Time Taken
When will acceleration occurs? Hint: Magnitude, Direction, Velocity
Acceleration occur when the magnitude of the velocity changes or the direction of the velocity changes or both.
Uniform Acceleration defines as?
The constant change of velocity of an object per unit time
Gradient of a Displacement-Time Graph gives you what?
Velocity
Instantaneous Velocity defines as? How do you obtain Instantaneous Velocity?
Velocity at a specific instant in time By finding the gradient of the tangent at a specific time on the D-T graph
Average Velocity defines as?
Average Displacement over a period of time
Gradient of a Velocity-Time Graph gives you?
Acceleration
Area under the Velocity-Time Graph gives you?
Displacement
Acceleration due to gravity is how many?
10ms^-2
All Three factors that affect the acceleration of a falling object that experiencing air resistance
Surface area of the object Density of air Speed of the object
Terminal Velocity occurs when?
The Acceleration of an object is zero, when to the weight of the object is equal to the air resistance against the object
Scalar Quantities are physical quantities that have what? Example of Scalar Quantities
Magnitude Eg, Distance, Mass, Time
