5 Questions
Explain the difference between speed and velocity, using the concepts of magnitude and direction.
Speed is the scalar absolute value of velocity, representing only the magnitude of motion. Velocity, on the other hand, is a vector quantity, requiring both magnitude and direction to define the motion.
Define constant velocity and provide an example of a situation where an object has a constant speed but not a constant velocity.
Constant velocity requires both constant speed and constant direction. For example, a car moving at a constant 20 kilometres per hour in a circular path has a constant speed but does not have a constant velocity because its direction changes.
What is needed to fully define velocity as a physical quantity?
Velocity is a physical vector quantity, requiring both magnitude and direction to fully define it.
What is the relationship between acceleration and changes in speed, direction, or both?
If there is a change in speed, direction, or both, then the object is said to be undergoing an acceleration.
How is velocity described in the SI (metric) system, and what is its coherent derived unit of measurement?
Velocity is measured in the SI system as metres per second (m/s or m⋅s^{-1}).
Test your knowledge of velocity, the fundamental concept in kinematics that describes the speed and direction of motion of an object. This quiz covers the basics of velocity as a physical vector quantity and its measurement in the SI system.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
