Roller skating is traveling on surfaces with roller skates. It is a recreational activity, a sport, and a form of transportation. Roller rinks and skate parks are built for roller skating, though it also takes place on streets, sidewalks, and bike paths.
Roller skating originated in the performing arts in the 18th century. It gained widespread popularity starting in the 1880s. Roller skating was very popular in United States from the 1930s to 1950s, then again in the 1970s when it was associated with disco music and roller discos. During the 1990s, inline outdoor roller skating became popular. Roller skating has often been a part of Black and LGBT history in particular.
Sport roller skating includes speed skating, roller hockey, roller derby, figure skating and aggressive quad skate. It is also widespread as a hobby.
Hello, everyone. I'm new here at the forums, and I've got a little physics problem I'd like your input on:
"A roller coaster reaches the top of the steepest hill with a speed of 6.0 km/h. It then descends the hill, which is at an average angle of 45 degrees and is 45 m long. What will...
Hi we're doing a project in class where we make roller coasters and we test them out by sending a marble down them.
As a bonus question my teacher asked why there would be an error in the calculations we do (finding speed at different locations of the roller coaster) if we're using a...
In my 11th grade physics class we had to design and make a marble roller coaster. Now we have to write a paper explaining how one aspect of our coaster works. I chose to do the jump, but I really have no idea how to explain how this works using physics. Can someone please help me? Also you can...
i don't even know how to derive an equation for this problem i am confused if someone would just show me how to derive the equation that would be appreciated not looking for an answer just how to do it.
A roller coaster is designed so that after a large drop, the cars enter a circular path...
I would appreciate any hints or help in solving the following two physics problems. At this point I am stuck after trying to solve the problems for a while.
1. Apollo astronauts hit a golf ball on the moon 180 meters and 30 meters on earth. Assume that the swing, launch angle, etc are the...
Hi
(see attached picture for problem)
"Three identical smooth rollers are positioned in a groove as shown. Knowing that each roller (with radius 2.5 ft) weighs 500 lb, determine the minimum angle \alpha required to make the pile not collapse (all surfaces are assumed frictionless)."
I...
Hi everyone,
Suppose I have a track that starts at a height h, goes down (not a vertical fall, but gradually in a slope), enters a circular loop of radius r (the loop is 'laying' on the ground so the top of the loop is at a height 2r from the ground) and then continues at ground level...
Alrighty.. I was just wondering if you'd be able to help me out with a quick little problem I have. For physics we had to build a roller coaster, i am in the process of calculating the work done by the frictional forces throughout the course. Here's the question; In loopdy loops, when the marble...
For my science fair project, I am testing the effect of changes in mass on the time it takes a car to complete a roller coaster track. The track is made of hotwheels track and has an initial ramp, two turns and a loop. I used the same car both times (once without added weight and once with an...
Hi, part my project involves designing a vertical loop on a roller coaster that is not to exceed 5 G. The weight of the coaster is 4.5 x 10^4 N. But, I don't know how high I need to start the coaster so that there is enough mechanical energy to make it through the loop. I read online that the...
The mass of the coaster is 800 kg
The lift hill is 18 m highabd it goes up the lift hill at 2.50 m/s
The second hill is 5.5m high.
Wants to know the speed at the top of the second hill.
do i really care about the weight of the car?
This is what i have so far
PEtop1 +KEtop1 = KE bott...
Hello, I'v lately been intrigued by roller coasters as of late (notice my prior post about that app)
I havnt been able to find any good websites to explain the physics of roller coasters in detail. I know of-coarse that it works on conservation of energy, that the initial potential energy is...
Assuming the roller coaster is towed to the top of the hill on the left-hand side of the diagram and released. How would the conservation of energy work. I know that at the top of the first hill there would be P.E. and as it gradually rolls down the K.E. takes over. But how about as it...