Definitions And Basics Flashcards
What is the definition of motion in a straight line?
Motion in a straight line refers to the movement of an object along a straight path.
True or False: An object in motion will remain in motion unless acted upon by an external force.
True
What is the formula for calculating average speed?
Average speed = Total distance / Total time
Fill in the blank: The unit of distance in the International System of Units (SI) is ____.
meter
What does the term ‘displacement’ refer to?
Displacement refers to the change in position of an object, measured as a straight line from the starting point to the final position.
What is the difference between distance and displacement?
Distance is the total path length traveled, while displacement is the shortest straight-line distance from the initial to the final position.
True or False: Velocity is a scalar quantity.
False
What is the formula for calculating velocity?
Velocity = Displacement / Time
What is uniform motion?
Uniform motion refers to motion at a constant speed in a straight line.
Fill in the blank: The acceleration of an object is defined as the change in ____ per unit time.
velocity
What is the unit of acceleration in the SI system?
meters per second squared (m/s²)
True or False: An object can have a constant speed but a varying velocity.
True
What does ‘negative acceleration’ indicate?
Negative acceleration indicates a decrease in the velocity of an object.
What is the formula for calculating acceleration?
Acceleration = (Final velocity - Initial velocity) / Time
Fill in the blank: The area under a velocity-time graph represents the ____ of an object.
displacement
What is the term for the slope of a distance-time graph?
Speed
True or False: A straight line on a distance-time graph indicates constant speed.
True
What is the relationship between speed, distance, and time?
Speed = Distance / Time
What does a horizontal line on a velocity-time graph represent?
A horizontal line on a velocity-time graph represents constant velocity.
Fill in the blank: The initial velocity of an object is denoted as ____.
u
What is the significance of the ‘final velocity’ in motion equations?
Final velocity is the velocity of an object at the end of a time interval.
True or False: An object in free fall is an example of motion in a straight line.
True
What conditions must be met for an object to be in uniform acceleration?
An object must have a constant acceleration over time.
What is the formula for calculating distance under uniform acceleration?
Distance = Initial velocity * Time + 0.5 * Acceleration * Time²
