The 2nd trial’s momentum was conserved. I think the momentum increased because the mass of the shooter marble was more than the regular marble and the shooter marble’s momentum was stopped. Conservation of momentum means that the momentum of an object is the same as the momentum of that object after it has a collision or other
As a vector quantity, velocity has both magnitude and direction, so it is not always true that the speed, the magnitude part, is the sole aspect that is changing. In fact, acceleration may come in one of three forms. It may lead to a change in the object’s speed, the object’s direction, or both. The first case, the one that is the easiest to visualize, is called linear acceleration. In this experiment, however, we investigated on the second case, called centripetal acceleration, which
The Big Crunch states that the universe will continue to expand to a point until the acceleration generated by the Big Bang is overwhelmed by the force of gravity, which will result in the universe being pulled into a central point and condensing into a singularity similar to the singularity at the start of the Big Bang. The Big Yawn is an alternate theory for the end of the universe which states that the universe will continue to expand until the second law of thermodynamics takes effect, at which point it will slowly descend into a total lack of thermal energy. This theory has had much less research put into it, mostly because of the lack of evidence supporting it. Of the two theories, the Big Crunch is more widely accepted by physicists and cosmologists
Richard Gott in 1991. Cosmic Strings were the defects in the fabric of space-time that were left form the formation of the universe and were cool down after the bigbang. A cosmic strings are one dimensional objects which means that they have length but does not have height or weight. These strings might intertwine throughout the universe, it is also thinner compared to an atom and under enormous pressure. The strings pack quite a gravitational pull on anything that passes through or gets near them, this might cause the cosmic string to travel incredible speed and ease from time dilation.
Subsequent in weight to the tennis ball, the baseball weighed 143.3 grams and 1404.34 newtons was its force. The heaviest object in our experiment was the softball, with a weight of 185.3 grams and a force of 1815.94 newtons. Our hypothesis is clearly proven using Newton’s second Law of Motion, force is equal to the mass multiplied by acceleration, justifying the more mass an object has, the more force it will
Using the first turn as an example, the PE was .035 joules and the KE was .003 joules. This shows that our PE vs. KE is fairly different. The usable energy lost was .025 j, which shows that our roller coaster had a good amount of friction. Our total energy at the start of our coaster was .063, with the same potential energy. As the roller coaster ended and more friction occur, the marble lost its momentum and the total energy and usable energy lost became the same.
Even if the vacuum is inside a box in a rocket traveling away from earth, both an astronaut in the rocket and a hypothetical observer on earth will measure the speed of light moving through that box to be exactly c. A faster speed cannot be measured. Indeed, c is the ultimate speed limit of the universe. However, we cannot say that nothing travels faster than light. Although the speed of light matters greatly, so many people do not know the fact that the speed of light is not a constant at all. The speed of light is very diverse as there exist various mediums in our world.
The weight is a red herring and isn’t used in the problem. A: This answer came from not converting the 55 centimeters to meters. B: While this answer may look like dividing answer A by 10, it actually came from finding out how long it would take the ball to return to 2.1 meters high. C: This answer comes from multiplying the acceleration by the distance the shot was in Steve’s hand. D: To calculate how long he has to get out of the way, the velocity the shot leaves his hand must be calculated first using v_f^2= v_i^2+2a(x_f- x_i ) where vi = 0 m/s, a = 42 m/s2 and (xf – xi) = 0.55 m. the velocity when the shot leaves his hand is 6.8 meters per second.
This means that the lighter something is and harder you kick something, it will fly further, but the heavier something is and lighter you kick something, the less further it will fly. The equation for calculating the acceleration of an object is acceleration=force/mass, in which acceleration is measured in meters/second, force is measured in Newtons, which is the standard measurement for force, and mass is measured in kilograms. For example, if I kick a 2-kilogram object using 20 Newtons of force, the ball will fly at around 10 m/s squared. Basically, the larger an object is the greater the mass of the object being accelerated the greater the amount of force needed to accelerate the
In this diagram, a neutron is absorbed by a uranium-235 nucleus, as a result, it turns of a small period of time to an excited uranium-236 nucleus, with the excitation energy provided by the kinetic energy of the neutron plus the forces that bind to the neutron. The uranium-236 then splits into two, smaller, lighter, fast-moving elements (these are known as fission products) and releases three free neutrons as well as gamma rays. Fusion and fission are nuclear reactions. Fusion is the binding of two atoms to produce a heavier atom while fission is splitting of an atom. Fusion releases more energy than fission and powers the stars.