To measure the speed of a car you have to divide the distance by time. To prove this formula, we did an experiment yesterday. For this investigation, we had to find out if the vehicles going past our school were under, in, or over the speed limit. We did the investigation on Carmen Road and the speed limit on this road is 50 km ph.
How did we do this experiment?
We had a certain amount of distance(which was from lamp post to the other- 50m) and. We also used a stopwatch to measure the time of one vehicle travelling from the first lamp post to the other lamp post. We turned the stopwatch on when a vehicle came at the first mark and turned it off when they reached the end of our measured marking.
What did we find out?
After we had done the recording we used the formula to find out the average speed in kmph for 10 vehicles. After finding the average of the 10 vehicles, we had to write a conclusion about the speed of the vehicles. We found out that the vehicles we were investigating on were either under/in the speed limit.
Results
As a result, the average speed of the 10 vehicles was 42.84 km hr-1(kmph) which was well in the speed limit. This could also result in this because of the traffic lights. At the traffic lights vehicle stop and when they move again, they take time to pick up speed.
Improvements?
We could improve by measuring the speed limit of cars on the other side of the road as there are no traffic lights.
To measure speed divide the distance by time. To convert from m s-1 to km hr-1 multiply your answer by 3.6.
No comments:
Post a Comment
To support my learning I ask you to comment as follows:
1. Something positive - something you like about what I have shared.
2. Thoughtful - A sentence to let us know you actually read/watched or listened to what I had to say
3. Something thoughtful - how have you connected with my learning? Give me some ideas for next time or ask me a question.
Note: only a member of this blog may post a comment.