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How does the kinetic energy of a body change if its momentum is halved?
Wiki User
∙ 9y ago
Since momentum is proportional to the velocity, half the momentum means half the velocity (and therefore half the speed).
And since kinetic energy is proportional to the SQUARE of the speed, half the speed means 1/4 the kinetic energy.
Wiki User
∙ 9y ago
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Do larger particles move faster than smaller ones?
because they have a larger mass and require a greater energy to move at the same speed. KE=1/2mv2 where m is mass, v is velocity and KE is kinetic energy so for the same energy if the mass is doubled then v2 is halved, resulting in a slower speed
Two point charges q1 and q2 are located a distance r apart in a vacuum Which change to the charges will halve the magnitude of the electric charge between them?
Hello, some error in the words. Electric "force" not electric charge. A/s we increase the distance between the charges ./2 times then force between them will be halved.
Will density change if you split an object?
ANSWER:No. The mass will be halved but the density will remain the same. ___________________________________________________________The density will remain the same since the formula for density of an object is mass/volume. When you split and object, the mass is divided by 2, and the volume is divided by 2 (or whatever fraction you want to cut your item). If you would, compare mass/volume=mass divided by 2/volume divided by 2.
Radium-226 is a common isotope on earth but has a half-life of about 1600 years. why is there any radium at all?
. This is because it keeps getting halved, and something that keep getting cut in half will never reach zero.
When the pressure exerted on a confined gas at a constant temperature is doubled the volume of the gas is?
Pressure will be doubled as well, if done in the samevolume (so: not in a balloon I mean).(Gas law: p/T=constant )
What will happen to the kinetic energy of the body if the mass of the body is halved and velocity remains the same?
Kinetic energy will also be halved. Because kinetic energy is equal to 1/2 mv2
What happens to speed if kinetic energy halved?
Kinetic energy is determined by mass and velocity. The velocity is halved if you double the original mass, so the kinetic energy stays the same (unless the mass added has the same kinetic energy in the observer's reference frame as the original mass).
What happened to kinetic energy is speed is halved?
The formula for kinetic energy is: KE = mv^2, in which m is mass in kilograms and v is speed in meters/second, or m/s. The unit for kinetic energy is the Joule (J), which is one kilogram·m^2/s^2. If the speed of a mass is halved, it's kinetic energy will be reduced by one quarter. For example, if a 1 kg mass has a speed of 4 m/s, its kinetic energy = 1 kg(4 m/s)^2 = 16 J. If the speed of the 1 kg mass is halved to 2 m/s, its new kinetic energy = 1 kg(2 m/s)^2 = 4 J.
What would be its momentum if its mass were halved?
secret
What happens to the potential energy of an object if the mass is halved?
I assume you mean the gravitational potential energy. This is proportional to the mass, so if you change the mass by a factor of "a", the gravitational potential energy will change by the same factor of "a".
When the mass of a moving object is doubled and its speed remains the same its momentum?
If the mass is doubled,speed should be halved to conserve momentum.
How much do you decrease your kinetice energy when you decrease your speed by double?
Kinetic energy is given by mv2, where m is mass and v is speed. To obtain a result let me divide the new kinetic energy, m(v/2)2 (where the initial velocity is divided by two), by the initial velocity, mv2. (v2/4)/v2 = 1/4 The kinetic energy will be one fourth of what it was when the speed is halved.
What happens to the speed of body when kinetic energy increase by four times?
Using; ke = (m x v^2) / 2 where ke = kenetic energy, m = mass and v = velocity, velocity has to be halved when the mass is multiplied by four in order to maintain the same kinetic energy.
What would be the momentum if the mass were halved?
momentum=mass * velocity if velocity remain unchanged, the momentum too will be halved ============================================== But wait! Haven't we all learned that momentum is conserved, and half of it doesn't just suddenly disappear ? If half of the mass of a moving object suddenly disconnects from the object and goes somewhere else, then half of the momentum must go along with that half of the mass, and the total momentum doesn't change. On the other hand, if Tinker-Bell flew by, waved her magic wand and sprinkled ferry dust on the moving object so that half of its mass truly ceased to exist, then in order to keep the total momentum constant, the object's velocity must double! The answer to the question is: No matter what happened to the massive moving object, or how it happened, total momentum doesn't change. It's the same today, tomorrow, and forever. Momentum of the total system is always conserved. If half of the mass is detached, you can't say the rest is the whole system. The whole system is together both halves. If both moving same velocity, momentum is divided. If that half stopped, half of the momentum goes to the force used to stop that.
What will happen to the potential energy of a body when its height is kept the same if the mass of the body is halved?
according to the equation for potential energy of a body i.e.''mgh'' if mass of the body is halved m/2 keeping it hight same then its energy will become half as well...
How does the velocity change if the displacement is halved but the time is unchanged?
No its stay contstant
What would be the momentum of a passenger bus if its velocity were doubled?
a) doubled b) tripled c) doubled (assuming the engine is used to bring it back to the same speed) d) quadrupled e) halved
