So you see, Newton's 3rd law can explain your balloon powered car. air shoots out the back at high speed and the car moves forwards (more or less) at low speed. So the force used to accelerate all that air backwards has an opposite force on the balloon (reaction) which is tied to the car so pushes in the opposite direction. Well the air's coming out fast in the beginning but thats when the car is only just moving, it takes a while to speed up and it takes even longer if you have a heavy car. So you may be able to argue it shows that f is proportional to Mass x acceleration (but to be honest I think that would be stronging it a bit - balloons don't seem to give very constant thrust.
And as the coaster train goes down the first hill, all the stored potential energy is transferred into kinetic energy. And it is also where the max kinetic energy is. It goes over the second hill and then up the loop and as it is at the top of the loop it has a high potential energy and then that energy is transferred into kinetic energy as the coaster train goes through the rest of the track. Coaster tracks serve to channel this force – it controls the way the coaster car moves and where it goes. Like at the bottom of the first hill as the car goes up the hill gravity pulls on it, so that it decelerates.
The kinetic energy of an object is determined by the mass and velocity at which the object is moving. When a coaster cart is dispensing down the first hill not all the potential energy is converted into kinetic energy, some is lost in other conversion processes. For example the friction given up by the moving parts of the cart give off heat. PE is also converted into some sound energy with the contact of the cart and the track in the process of reaching the top of the hill. The cart causes the supporting structure to flex, bend and vibrate and producing kinetic energy but not on the cart but on the track.
To determine the free-fall acceleration g from a graph of acceleration vs. sine of track angle. • measure the acceleration of a rolling cart on an inclined plane with a motion detector; • change the angle of the incline and measure the acceleration for different angles; • determine how the acceleration depends on the angle and the gravitational acceleration Measuring 'g' experiment. The purpose of this experiment is to measure the acceleration due to gravity and to see if the effects of air resistance can be observed by dropping various balls and recording fall times.. Moment of Inertia The purpose of this experiment is to determine
Gravity and Potential Energy Gravity is the driving force of a roller coaster. From the moment the roller coaster train passes the peak of the lift hill, it is the acceleration due to gravity that brings it back to the beginning. When the train is released from the top of the lift hill, gravity pulls it down. The train begins slowly, then picks up speed as it approaches the bottom of the hill. As it begins to climb the next hill, the speed decreases.
This extreme pressure change makes the iso bars compact together creating fast moving winds and causing wind speeds to increase to even out the air pressure. 3. Describe the changes in central pressure and sustained wind speed between 29 and 30 August 2005? The air pressure from august 29th to august 30th changed from 904mbars to 985 mbars. While the air pressure increased the winds decrease as iso bars spread apart and wind is no longer moving at an abrupt pace.
I also predict that doubling the concentration of acid will require double the amount of alkali to reach an end point. This would be due to there being more hydrogen ions present in a more concentrated acid, and therefore more OH- ions needed to neutralise these. When concentration doubles, this means there is twice as many H+ ions; therefore twice as much alkali will be needed to balance them out. Apparatus list:
Answer: -Of the three balls that are rolled, the ball in the middle should reach the bottom first strictly based on the fact that it travels down a steeper slope at the beginning, resulting in a faster acceleration then the other two balls. 22.) Which is greater, an acceleration from 25 km/h to 30 km/h or one from 96 km/h to 100 km/h if both occur during the same time? Answer: -The acceleration from 25 km/h to 30 km/h is 5 km/h. The
Stress Analysis An important factor to determine is how much stress the stabilizing link needs to withstand. It was stated that the stabilizing link was designed to withstand 1G of lateral force. In order to have a lateral force of one G on the Bridgehampton race track, we calculated the car’s maximum speed in turn 11 to be 71 feet per second. This was done by estimating the radius of the turn from a map of the track to be 340.7 feet. This seems to be a reasonable value of speed in a hairpin turn.
The maximum angle lies between the 30º - 35º and the standard heights don’t reach over the 18 meters. The main components on an escalator are the top and bottom landing platforms, the truss, the tracks, the steps and the railing. Working Principle Each step in the escalator has two sets of wheels, which can roll along two separate tracks. The upper set which is near the top of the step are connected to the rotating chains. So that it can be pulled by the drive gear at the top of the escalator.