3650 linear kinematics

Question 1

how many decimal places do you go to

Answer 1

2

Question 2

displacement 3

Answer 2

length of the straight line joining the start and finish point (m)
vector - some sense of direction
sign is used to establish relative direction of displacement

Question 3

velocity 5

Answer 3

displacement over time
how quickly is displacement changing in time
(m/s)
vector
sign is used to establish displacement change relative to origin -
+is away from origin
-is toward origin

Question 4

average vs instantaneous velocity

Answer 4

between times vs at a time

Question 5

uniform displacement

Answer 5

constant velocity

Question 6

if we sample more frequently

Answer 6

more accurate rep because we dont know the values between samples

Question 7

acceleration 3

Answer 7

how quickly is velocity changing in time
m/s^2
vector
sign establishes whether velocity is increasing(+) or decreasing (-)

Question 8

uniform acceleration

Answer 8

equal changes in velocity in equal changes in time

Question 9

on a graph distance, velocity and acceleration can be calculated by

Answer 9

area under the curve

Question 10

longer strides and less steps

Answer 10

lower frequency which increases efficiency

Question 11

two step interval method

Answer 11

(displacement 3-displacement 1)/(time 3- time 1) = velocity at 2