taxi camera is stationary for the duration of the 0.3 seconds the Ferrari sped across
the height of the traffic light post is approximately 2.0 m from base to green light center
the video is properly time-frame as 30 frame/seconds as default in the video data, and read correctly by tracker.
the Ferrari is traveling at constant acceleration = 0 m/s^2
track the front of the Ferrari.
Step 5: Make roughly 8 to 9 points as shown
using tracker to trace the motion of the car
Step 6: .Analyze the speed
which is roughly 60 m/s from as evidence from the
6.1 s vs t graph,
linear fit x = 60.178*t + -13.821 where a = 60.178 which means the average velocity assuming a constant velocity motion
linear fit x = 60.178*t + -13.821 by comparing coefficient to constant acceleration equation x = u*t + x0 roughly u = 60 m/s
6.2 v vs t graph statistic mean v average = 60 m/s
data tool notice the mean for x is 6.097E1 which means 60.97, another evidence of average velocity
when converted to km/hr, v = 60*3600/1000 = 216 km/hr = 210 km/hr ( round down 2 significant figures) = 200 km/hr ( 1 significant figure).
The vehicle is likely to be traveling at speed of 200 km/hr, given the evidences and assumptions made in the analysis.
What do you think ??
Source of errors:
moving source camera and some parallax error taxi camera was not stationary for the duration of the 0.3 seconds the Ferrari sped across.
the height of the traffic light post is not 2.0 m from base to green light center
the source of the video could not be verified in the time frame used to capture the video, and the time-frame may not be 30 frame/seconds, though it is likely to be correct.
Physics & Science lesson learn could be:
Using current affairs to educate the children on everyday physics and making physics relevant.
using evidences to justify claims.
Morale lessons caught could be:
Don't drive recklessly.
Don't beat red lights.
This post is made with the best intentions to share good active learning practices in physics education, any offenses taken please leave a comment, i will amend the post or/and to remove offensive content if any.
The mass media media corp 5 news also reported on the accident.