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- Calculating Percent of Kinetic Energy Lost • Physics Forums
Homework Statement We are doing a lab in my physics class We have to calculate the percentage of Kinetic energy lost in an inelastic collision I believe
- What happens to Kinetic Energy in Perfectly Inelastic Collision?
I’m going over a chapter on linear momentum in my physics course right now and am somewhat puzzled with what happens with some of the kinetic energy that is lost in a perfectly inelastic collision
- Gravitational PE lost v Elastic PE gained in mass - spring
1 Surely the gravitational potential energy lost by the mass should equal the elastic potential energy gained by the spring? On the contrary, if something fell down doesn't that imply it gained some downwards velocity and hence the change in kinetic energy should be related to the net work done on the object? Here is a warning
- Speed of the particle at a height h - Physics Forums
So KE 0 = when the particle is on the ground less the KE when the particle is somewhere flying equals to PE So 9 - 3 = 6 9 was the initial KE 0, 3 is the KE at some height and 6 is the KE lost or PE gained
- Shouldnt the change in kinetic energy be more in a moving elevator . . .
In order to find the amount of KE converted into heat, we must get into a reference frame where KE of the elevator is not infinite and with infinite mass, only if the velocity of the elevator is zero, we will get a finite (zero) KE of the elevator that's why we must calculate the KE lost in a frame of reference where the elevator is at rest
- Energy i stuck on the last question, i , appreciate - Physics Forums
At what time (s) are the speed and KE required? Your answer for b is correct immediately after collision Trivially, the speed after traveling distance L is zero In your proposed solution for c you assume the question requires the energy lost after traveling distance L The velocity then is zero so all the initial GPE has been lost
- momentum - How do I show the fractional change in Kinetic Energy in a . . .
Now, the negative sign here indicates that energy is lost in the collision This should make sense since (a) inelastic collisions expect the non-conservation of KE and (b) you can't gain energy here without some source Thus, the only option is the final state must have lesser kinetic energy than the initial state
- Point charge in an electric field - Physics Forums
This equation comes to mind: \sqrt {\dfrac {2\Delta x} {a}} = t Okay, now let's see How much of the particle's KE will be lost after traveling 8mm in the electric field Remember to convert this to meters Find the initial KE - this should be easy enough for you Then find the KE after the particle travels this distance 8mm
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