Investigating the Effect of Mass and Speed of a Moving Object on Its Stopping Time
The investigation is about the mass and speed of a moving object and
how this affects its stopping distance due to the changes in energy
needed to brake.
Since I cannot measure the speed and energy accurately I shall change
the definition of my investigation.
The problem/task I will be investigating is how the mass of a moving
object – a trolley, affects its stopping distance.
[IMAGE]
[IMAGE] Stopping Distance m
In order for a moving vehicle to stop a Braking Force is needed. The
friction between the wheel and the ground usually does this. But in
this experiment the trolley has no brakes therefore a weight is
attached to the trolley to stop it when the string attached to the
weight tightens and provides an opposing force to the movement of the
trolley.
Force is the factor that pushes or pulls an object. Forces can change
the speed and direction of an object as well as changing its shape.
The size of a force is measured in Newtons (N).
Work is done when an applied force moves or acts upon an object,
against and opposing a force. Work is equal to the energy transferred
and is measured in Joules – J. The equation for Work is Force x
Distance.
KE is the type of energy all moving objects transfer is measured in J.
The faster the object is moving the more force is needed to stop it.
This can be explained by saying that the faster the object is moving
the more kinetic energy it has and therefore it will need more work to
stop it. According to the conservation law all energy cannot be
created or destroyed. Also to stop a movement the same amount energy
used to move it must be used to stop it. If it has a greater mass then
a greater amount of force is needed to push the object therefore it
needs a greater amount of work to stop it.
4. How would you explain your results using the terms: impulse, momentum, force, and time? Use equations to help you explain the results.
is the reason that the ball does not rebound off the block at the same
In this inquiry the relationship between force and mass was studied. This inquiry presents a question: when mass is increased is the force required to move it at a constant velocity increased, and how large will the increase be? It is obvious that more massive objects takes more force to move but the increase will be either linear or exponential. To hypothesize this point drawing from empirical data is necessary. When pulling an object on the ground it is discovered that to drag a four-kilogram object is not four times harder than dragging a two-kilogram object. I hypothesize that increasing the mass will increase the force needed to move the mass at a constant rate, these increases will have a liner relationship.
An object remains at rest, or in motion, unless an external force acts upon it.
This equation shows that mass will not affect the speed of an object, proving that whatever the mass of an object, the speed will always remain the same if all the other factors are kept constant.
Newton’s Second Law of Motion. It states, “The force acting on an object is equal to the mass of that object times its acceleration (Lucas, paragraph 2).” Mike 's car, which weighs 1,000 kg, is out of gas. Mike is trying to push the car to a gas station, and he makes the car go 0.05 m/s/s. Using Newton 's Second Law, you can compute how much force Mike is applying to the car with this formula ( F= 1,000 x 0.05 which equals 50 newtons). This is easy,
We ran into Newtons First Law, which claims that an object resists change in motion, as the marble rolled down the floor it didn’t stop until it was acted against by friction. As we moved on, Newtons Second Law came into play when we were creating our lever as we need a ball that would roll down with enough acceleration that it could knock down the objects. Newton’s second law claims, that F=MA. So, we choose a golf ball since it would have more mass than a rubber ball, but it would have less acceleration when the lever was started. This way, it would knock the upcoming objects. Newtons Third Law claims that every action yields an equal and opposite reaction. This is proven in our Rube Goldberg Machine when the small car was rolling down the tracks as the wheels pushes against the track making the track move backwards. The track provides an equal and opposite direction by pushing the wheels forward.
can move itself. Therefore, if something is in motion, it must have been put in motion by
The object was created by Sir Isaac Newton to demonstrate conservation of momentum of energy through five swinging spheres. When one end of the device is lifted and then released it strikes the other spheres and the direct force causes them to move. The first ball might have caused the impact but it was not capable of moving itself and another sphere did not move it. The force that created the initial reaction was outside of the Newton’s cradle. Newton however had a very different outlook on motion “The Newtonian motion which remained, however, is the result of conflict, lacks any purpose or goal and has nothing to do with the divine life itself. Aristotle, and indeed Plato before him, would have viewed such motion” (SIMON OLIVER) Even though both famous academic thinkers came to the same conclusion that everything in motion must have be placed in motion they cannot come to the same conclusion “Ultimately, all motion is seen as a participation in the most perfect "motionless motion" of the Trinitarian Godhead in which all things are known, and thereby created and sustained, in the eternal emanation of the Son from the Father. By contrast, Newton outlined a view of motion which saw this category as a primitive state to which bodies are indifferent. Thus motion tells us nothing about the ontology of creation.
The force on a small object is bigger than the same force acting on a
This theory, developed by the greatest genius of all all time, Albert Einstein in 1905. In order to let simpler, less genius people, who didn't have his brain and capability of learning, he developed two simple postulates that were able to explain this strange fact. In the process, he came up with numbers that were even more strange than the idea itself. According to his original theory, the relationship between time and light, time actually slows down for objects that are moving at near light speeds.The object themselves will become shorter and heavier. This crazy theory has since then been proven with various experiments showing the trueness in this theory. This plays an important role in astronomical observation.
We did not have a specific place on the ramp at where we would drop the mass pieces onto the trolley. We just dropped them anywhere on the ramp. The position of the collisions was different for all three trials which might have affected the results because the distance after the collisions was different for every collision. There was no consistency.
Force is a push or a pull, which can make an object start moving when
The second law is, “the relationship between an objects mass (m), its acceleration (a), and the applied force (f) is F= ma.” The heavier object requires more force to move an object, the same distance as light object. The equation gives us an exact relationship between Force, mass, and acceleration.