Acceleration And Velocity Flashcards
What is the definition of velocity?
Velocity is the speed of an object in a given direction.
True or False: Velocity is a scalar quantity.
False
What is the formula for calculating acceleration?
Acceleration = (final velocity - initial velocity) / time
Fill in the blank: Acceleration is measured in ______.
meters per second squared (m/s²)
What does a negative acceleration indicate?
It indicates that an object is slowing down.
If an object travels 100 meters in 5 seconds, what is its average velocity?
20 meters per second (m/s)
True or False: Speed has both magnitude and direction.
False
What is the difference between speed and velocity?
Speed is a scalar quantity, while velocity is a vector quantity that includes direction.
What is uniform acceleration?
Uniform acceleration occurs when an object’s acceleration is constant over time.
Fill in the blank: The SI unit of velocity is ______.
meters per second (m/s)
Calculate the acceleration if the initial velocity is 10 m/s, final velocity is 30 m/s, and time taken is 4 seconds.
5 m/s²
What is the term for the rate of change of velocity?
Acceleration
True or False: An object can have a constant speed but changing velocity.
True
What happens to the velocity of an object in free fall?
The velocity increases due to gravitational acceleration.
What is instantaneous velocity?
Instantaneous velocity is the velocity of an object at a specific moment in time.
If a car accelerates from rest to 60 m/s in 10 seconds, what is its acceleration?
6 m/s²
Define the term ‘deceleration’.
Deceleration is a decrease in speed or negative acceleration.
What is the formula for calculating distance when acceleration is constant?
Distance = initial velocity × time + 0.5 × acceleration × time²
Fill in the blank: The area under a velocity-time graph represents ______.
distance traveled
True or False: A velocity-time graph with a flat line indicates constant acceleration.
False
What does a steeper slope on a velocity-time graph indicate?
A greater acceleration.
What is the initial velocity of an object that starts from rest?
0 m/s
Fill in the blank: The change in velocity can be referred to as ______.
delta v
What is the difference between average velocity and instantaneous velocity?
Average velocity is calculated over a period of time, while instantaneous velocity is at a specific moment.
What is the significance of a zero acceleration?
It means the object’s velocity is constant.
