Kinematics

Question 1

Kinematics

Answer 1

deals with the description of how an object moves, must be given relative to some reference frame

Question 2

displacement

Answer 2

change in position of an object

Question 3

Average speed

Answer 3

distance traveled divided by the elapsed time or time interval Delta
T

Question 4

time interval or delta t

Answer 4

the time period over which we make our observations

Question 5

average velocity

Answer 5

displacement over the time interval, delta x over delta t

Question 6

instantaneous velocity

Answer 6

magnitude is the same as instantaneous speed, the average velocity taken over an infinitesimally short time period

Question 7

acceleration

Answer 7

change in velocity per unit time

Question 8

average acceleration

Answer 8

change in velocity over the time interval, delta v over delta t

Question 9

Instantaneous acceleration

Answer 9

Average acceleration taken over an infinatesimally short time interval

Question 10

Acceleration due to gravity

Answer 10

Constant downward acceleration if air resistance can be ignored

Question 11

Slope of a graph

Answer 11

Equivalent to the slope of the tangent line at any point, on a graph of position vs time the slope is velocity on a graph of velocity vs time the slope is acceleration