Solving Kinetic Energy Lost in Collision: Help Needed

In summary, solving for kinetic energy lost in collisions can be a complicated process that requires a good understanding of the principles of conservation of energy and momentum. It involves calculating the initial and final kinetic energies of the objects involved, as well as taking into account any external forces or factors that may affect the outcome. To accurately solve for the kinetic energy lost, it is important to carefully analyze the situation and consider all relevant variables. Seeking help from experts or utilizing specialized tools and equations can also aid in the solving process.
  • #1
atandtwire
2
0
A 78g particle moving with an initial speed of 39m/s in the positive x direction strikes and sticks to a 160g particle moving with 33m/s in the positive y direction.

How much kinetic energy is lost in this collision? Answer in units of J.


Can someone please tell me how to solve this problem. Or at least set me up with the equations.


Thanks.
 
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  • #3
soccerdude28 said:
http://physics.bu.edu/~duffy/py105/Momentum.html
Read that, it should help you out.

wow man that's an awesome resource. i love anything that uses plain english.

have any links to the same person talking about power/force/energy/friction?
 
  • #4
soccerdude28 said:
http://physics.bu.edu/~duffy/py105/Momentum.html
Read that, it should help you out.

seeing as i tried that equation and apparently i still have the wrong answer...anyway i can get a step by step? i must be missing something?
 

FAQ: Solving Kinetic Energy Lost in Collision: Help Needed

What is kinetic energy lost in a collision?

Kinetic energy lost in a collision refers to the amount of energy that is dissipated or transferred away during a collision between two objects. This energy is typically lost in the form of heat, sound, or deformation of the objects involved.

Why is it important to solve for kinetic energy lost in a collision?

Knowing the amount of kinetic energy lost in a collision can provide valuable information for analyzing the effectiveness of safety measures, designing more efficient collisions, and understanding the physics of the collision itself.

How do you calculate kinetic energy lost in a collision?

The formula for calculating kinetic energy lost in a collision is KElost = (1/2) * m * (vf^2 - vi^2), where m is the mass of the object and vf and vi are the final and initial velocities, respectively. This formula assumes that the collision is perfectly elastic, meaning no energy is lost in the form of heat or deformation.

What factors can affect the amount of kinetic energy lost in a collision?

The amount of kinetic energy lost in a collision can be affected by several factors, including the masses and velocities of the objects involved, the angle of collision, and the elasticity of the objects. Additionally, external factors such as friction and air resistance can also play a role in the amount of energy lost.

Can kinetic energy be gained in a collision?

Yes, kinetic energy can be gained in a collision if the objects involved are inelastic, meaning they stick together after the collision. In this case, the kinetic energy lost by one object is gained by the other object, resulting in a net gain of kinetic energy.

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