All Flashcards
What is the effect of doubling the mass on kinetic energy?
Kinetic energy doubles.
What is the effect of doubling the velocity on kinetic energy?
Kinetic energy quadruples.
What happens to kinetic energy if an object is at rest?
Kinetic energy is zero.
What happens to the kinetic energy of an object if its velocity is negative?
The kinetic energy remains positive because velocity is squared in the formula.
What happens to the kinetic energy as work is done on an object?
The kinetic energy changes by the amount of work done (Work-Energy Theorem).
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.
What is the effect of doubling the mass on kinetic energy?
Kinetic energy doubles.
What is the effect of doubling the velocity on kinetic energy?
Kinetic energy quadruples.
What is the effect of a negative velocity on kinetic energy?
Kinetic energy is always positive because velocity is squared.
What happens to the kinetic energy of an object if it comes to a complete stop?
The kinetic energy becomes zero.
What effect does friction have on kinetic energy?
Friction converts kinetic energy into thermal energy, reducing the object's kinetic energy and eventually bringing it to rest.