Change in Kinetic Energy in a Inelastic collision

  • Thread starter DNSalehi
  • Start date
  • #1
1
0
Just had a general question involving the change in Kinetic Energy in a Inelastic collision between 2 cars going towards each other at equal velocity.

ΔK = K - Ko

However for the final K, is the mass the combined mass of both cars since they are now moving together, or is it still the same mass as before the collision?
 

Answers and Replies

  • #2
PhanthomJay
Science Advisor
Homework Helper
Gold Member
7,167
507
After using conservation of momentum to determine the speed of the cars after the collision, the change in K of the system is found by comparing the combined energy of both cars before and after the collision. If you are concerned about the change in K of each car separately, then compare each car's change in K separately for each car. The sum total of each car's change in K will be equal to the change in K of the system.
 

Related Threads on Change in Kinetic Energy in a Inelastic collision

  • Last Post
Replies
13
Views
2K
Replies
2
Views
1K
  • Last Post
Replies
3
Views
21K
Replies
3
Views
1K
Replies
3
Views
3K
Replies
2
Views
12K
Replies
9
Views
10K
Replies
2
Views
6K
Replies
3
Views
11K
Replies
2
Views
2K
Top