All Flashcards
Define translational kinetic energy.
The energy an object possesses due to its motion.
What is a scalar quantity?
A quantity that has magnitude but no direction.
What is the unit of kinetic energy?
Joules (J)
Define 'frame-dependent' in the context of kinetic energy.
Kinetic energy of an object varies depending on the observer's reference frame.
What is an inertial reference frame?
A frame of reference in which an object remains at rest or moves with constant velocity unless acted upon by a force.
Differentiate between scalar and vector quantities.
Scalar: Magnitude only (e.g., kinetic energy). Vector: Magnitude and direction (e.g., velocity).
How does kinetic energy differ when observed from different frames of reference?
Kinetic energy depends on the observer's frame of reference, as velocity changes with the observer's motion.
Compare the effect of doubling mass versus doubling velocity on kinetic energy.
Doubling mass doubles KE. Doubling velocity quadruples KE.
Define translational kinetic energy.
Energy an object possesses due to its motion.
What is the formula for kinetic energy (KE)?
KE = 1/2 * m * v^2, where m is mass and v is velocity.
What type of quantity is kinetic energy?
Scalar quantity (magnitude only).
What are the units for Kinetic Energy?
Joules (J)
What is the relationship between kinetic energy and velocity?
Kinetic energy is proportional to the square of the velocity.