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Practice questions for this set
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speed has no direction and velocity has direction
Choose an answer
what is the difference between speed and
1 2 what is physics?
velocity
what is the frame of reference used to
3 4 What are mechanics?
establish motion?
Don't know?
Terms in this set (75)
what is physics? the study of nature at its fundamental
what are the differences between a
scientific theory and law?
What are kinematics? the study of motion without considering its causes
What are kinetics? concerned with the forces causing the motion
What are mechanics? the study of how bodies react to forces acting on them
What are statistics? the study of bodies in equilibrium
What are the 2 parts of dynamics? 1. kinematics
2. kinetics
, Kinematics is the branch of mechanics that the motion of objects without necessarily discussing the cause
describes... of the motion
One-dimensional (1D) kinematics refers to.. motion in a straight line
Kinematics involves what as variables..? 1. initial and final positions
2. velocities of objects
3. elapsed time
4. constant acceleration
what 2 things are crucial in kinematics? magnitude and direction
Motion is described with respect to a frame of reference
what is the frame of reference used to coordinate system with an origin and +/- directions
establish motion?
Left and down are what type of direction? negative
Right and up are what type of direction positive
what is the coordinate system used? cartesian system where quantities are specified in SI units
what is the symbol and SI unit for the t, seconds (s)
kinematic variable of... time
what is the symbol and SI unit for the x0, meters (m)
kinematic variable of... initial position
what is the symbol and SI unit for the xf, meters (m)
kinematic variable of... final position
what is the symbol and SI unit for the ∆x = xf - x0, meters (m)
kinematic variable of... displacement
what is the symbol and SI unit for the v0, meters per second (m/s)
kinematic variable of... initial velocity
what is the symbol and SI unit for the vf, meters per second (m/s)
kinematic variable of... final velocity
what is the symbol and SI unit for the a, meters per second per second (m/s^2)
kinematic variable of... acceleration
velocity is the derivative of... position
acceleration is the derivative of... velocity/time
draw the 1D kinematics graphs for a
stationary object (x, v, a)
draw the 1D kinematics graphs for uniform
motion (x, v, a)