All Flashcards
What is a reference frame?
A viewpoint for measuring motion, affecting the direction and magnitude of physical quantities.
What is an inertial reference frame?
A reference frame that is not accelerating; it moves at constant velocity or is at rest.
Define observed velocity.
The velocity of an object as perceived from a particular reference frame, combining its actual velocity and the observer's frame velocity.
What is relative velocity?
The velocity of an object with respect to a specific observer or reference frame.
What does it mean for acceleration to be invariant in inertial frames?
Acceleration remains constant when measured from any inertial reference frame.
How do you convert measurements between reference frames?
- Determine the relative velocity of the frames. 2. Use vector addition/subtraction to adjust the measurements based on the relative velocity.
How do you determine the observed velocity?
- Identify the object's velocity. 2. Identify the velocity of the observer's frame. 3. Use vector addition or subtraction to combine the velocities.
List the steps to solve relative velocity problems in one dimension.
- Define the positive direction. 2. Assign velocities with correct signs. 3. Add or subtract velocities depending on the direction of motion.
What is the effect of changing reference frames on the measured direction and magnitude of quantities?
Changing reference frames can alter the perceived direction and size of measured quantities.
What is the effect of an object accelerating in one inertial frame on its acceleration in another inertial frame?
The object's acceleration remains the same in all inertial frames.