Motion Flashcards
What is the definition of displacement?
The shortest distance from the initial position to the final position
Displacement is a vector quantity that includes both magnitude and direction.
What is the relationship between distance and displacement?
Distance is the actual length of the path traveled, while displacement is the shortest distance to the final position
Distance is a scalar quantity, whereas displacement is a vector quantity.
How is distance calculated when moving from point A to point B?
Distance = OA + AB + BO
If OA = 45k, AB = 25k, and BO = 30k, then total distance = 96k.
What is uniform motion?
Motion at a constant speed in a straight line
In uniform motion, the distance covered in equal intervals of time is the same.
True or False: Distance can be described by magnitude alone.
True
Distance does not take direction into account.
Fill in the blank: Displacement can be described by _______ and direction.
[magnitude]
Displacement requires both a numerical value and a directional component.
What is the significance of direction in displacement?
Direction is essential as it distinguishes displacement from distance
Displacement can change even if the distance remains the same based on the path taken.
Define distance.
The actual length of the path traveled by an object
Distance is a scalar quantity.
What is the total length path covered by a moving object called?
Distance
Distance is a scalar quantity and its SI unit is metre (m).
What is the shortest distance between the initial and final positions known as?
Displacement
Displacement is a vector quantity and its SI unit is metre (m).
What is defined as the change in velocity of a body with time?
Acceleration
Acceleration is a vector quantity.
Fill in the blank: Acceleration = Change in velocity = V - ______.
Initial velocity
What type of acceleration occurs when velocity increases with time?
Positive acceleration
An example is a body falling towards the Earth.
What is the term for acceleration when a body decreases in velocity over time?
Negative acceleration
Negative acceleration is also called retardation or deceleration.
What is the acceleration of a ball thrown vertically?
Negative acceleration
This occurs as the ball slows down due to gravity.
What does it mean when acceleration is zero?
No change in velocity
In this case, the object is at rest or moving at constant velocity.
During uniform motion, what happens to the velocity of an object over time?
Remains constant
In this case, the change in velocity for any time interval is zero.
What is uniform acceleration?
Constant increase or decrease in velocity
This occurs when an object travels in a straight line.
What is the definition of uniform acceleration?
An object travels with a constant change in velocity over equal intervals of time.
This means that the acceleration remains constant.
If a car travels a fixed distance in equal intervals of time, how is it described?
The car is moving with uniform acceleration.
Uniform acceleration indicates that the speed increases by equal amounts in equal time periods.
What is the formula for acceleration?
Acceleration = change in velocity / time.
This formula helps calculate the rate of change of velocity.
Is speed a scalar or vector quantity?
Speed is a scalar quantity.
Scalar quantities have only magnitude and no direction.
What distinguishes speed from velocity?
Velocity is a vector quantity.
Unlike speed, velocity includes both magnitude and direction.
What happens to velocity when an object is stationary?
Velocity equals zero.
A stationary object has no change in position over time.
What is non-uniform acceleration?
An object changes its velocity at a non-uniform rate.
This means the rate of acceleration is not constant.
Fill in the blank: Velocity can be _______.
negative.
Negative velocity indicates movement in the opposite direction.
What does the graph indicate when an object is moving with uniform speed?
The graph shows a straight line.
A straight line indicates consistent speed over time.
What is the relationship between distance and time in accelerated motion?
Speed is the total distance travelled per unit time.
This relationship is crucial for understanding motion dynamics.
What is ‘speed’ classified as?
A scalar quantity
What is ‘velocity’ classified as?
A vector quantity
What does a graph indicating speed show when the object is stationary?
The object is at rest
What does it mean when an object is moving with constant speed?
The object is moving uniformly
Fill in the blank: The object is moving with _______ increasing speed.
uniformly
Fill in the blank: The object is moving with _______ decreasing speed.
uniformly
What does it mean when an object is moving with constant velocity?
The object is moving uniformly
What is the term for an object moving with uniformly increasing velocity?
Acceleration
What is the term for an object moving with uniformly decreasing velocity?
Deceleration
What is the relationship between speed and time when the object is in motion?
Speed can change over time
True or False: An object moving with constant speed is also moving with constant velocity.
False
What does ‘uniform deceleration’ refer to?
The object is moving with uniformly decreasing speed
