1. A quantitative description of motion without reference to its physical causes.
a. Dynamics b. Acoustics c. Kinematics d. Optics
2. These are quantities that can be described completely by their magnitudes and appropriate units.
a. quantitative measurements c. scalar quantity
b. vector quantity d. qualitative descriptions
3. These are quantities completely described by their magnitudes, appropriate units, and their
directions.
a. velocity c. speed
b. scalar quantity d. vector quantity
Answer (1)
c. KinematicsKinematics is the branch of mechanics that describes the motion of objects without considering the forces that cause them.c. Scalar quantityScalars have only magnitude and unit (e.g., distance = 10 meters).d. Vector quantityVectors include both magnitude and direction (e.g., velocity = 60 km/h north).
