By -

 Joel Engelsma

LAB REPORT FOR FRICTION 



The purpose. 

We will see how friction affects the distance the car will travel by different surfaces.


Hypothesis

 the car will travel on a smoother surface because there is less friction than on any other. Our independent variable is the different surfaces.

The dependent variable is the distance the car will travel.


Materials 

A toy car 

A board 

A yoga mat 

A tape measure

 A towel 

4 books


Procedure

Step 1 put the car on the top of the board and layout yoga mat about under the slanted board.

Step2 roll the car down the downward slant and measure how far it went.

Step3 record the measurements on paper or computer.



Data 

distance traveled 

Towel 

11.5 inches

12 inches

13 inches 

Average 12 ⅙ inches


Bare floor

113 inches

 121.5 inches

 118 inches

Average 117.5 inches


Yoga mat

 27 inches 

28 inches 

30 inches 

Average 28 ⅓



Discussion and Results


The conclusion of this experiment is that the car rolled the farthest on the normal bare floor.  If we do this again, we could use different cars of different weights and we might use a ball instead of a car.  We could make the slant steeper to add a more complex variable.   I was surprised at how far the car went on the yoga mat because it was really rough but the towel lost the most ground.   My hypothesis was correct though because the bare surface did make less friction and went the farthest. We could apply this to real-life by making roads rougher so cars can stop faster.

Comments

Post a Comment

Popular posts from this blog

answers

By -
 so I have read this part before but I never told you about it this is quite interesting. called rooster earplugs the rooster lets out a cockle doodle do that has 140 decibels. of sound that's loud enough to defend. you that is why the rooster does it in a high place and away from the hens. so he doesn't deafen them also the rooster has these built-in earplugs that totally block up his ear ducts. also he has a lot of hair or something like that in there so it would have to get through that. see even in this stupid animal God has put in these amazing adaptions or something like that other than adaptions.
Read more

the attack

By -
boom boom jake suddenly woke up there was yelling out of the window the city is being attacked by those crazy greeks he got uu and looked out of his 2 story window and he saw a fire in one part of the city grabbing his flintlock and ammunition and ran outside
Read more
By -
 My place on immigration is this.  I think there should be an open border with relatively simple ways to get in a simple background check and a photo id then we just put a record in the country of you this way we vet a lot of people that would be dangerous if they want to stay in America its as simple as going to a secretary of state office and getting citizenship.
Read more