What happens to kinetic energy in a car collision?

In summary, the conversation is about a question regarding a car collision. The first car, A, has a mass of 1050kg and was moving at 50mph before hitting the stationary car B, which has a mass of 1200kg. After the impact, the two cars are locked together. The question is asking for the speed of the two cars immediately after the collision and the amount of kinetic energy lost. The person asking for help is reminded to show their attempt at a solution and any equations or assumptions used. The conversation can be found in a duplicate thread, where there is further discussion.
  • #1
RachelT
9
0
first post so here goes: this question isn't hard but i can't seem to get the answer i should have.

'a car of mass 1050kg runs into the back of car b which is stationary with mass 1200kg. car A was moving at 50mph immediately before impact. after impact, the vehicles are locked together'

calculate the speed at which the 2 vehicles move immediately after collision and the amount of kinetic energy lost in the collision. what has happened to this energy?

any help appreciated. thank you!
 
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  • #2
Welcome to the forum. You are meant to show your attempt at a solution and any equations/assumptions used before asking for help.
 

Related to What happens to kinetic energy in a car collision?

1. What is A-Level momentum question?

The A-Level momentum question is a type of physics question that assesses a student's understanding of the concept of momentum, which is the product of an object's mass and velocity. It is often included in A-Level physics exams and requires students to apply the principles of conservation of momentum and impulse to solve problems.

2. How do you calculate momentum?

Momentum is calculated by multiplying an object's mass by its velocity. The formula for momentum is p = m x v, where p is momentum, m is mass, and v is velocity. The unit for momentum is kg*m/s.

3. What is the principle of conservation of momentum?

The principle of conservation of momentum states that in a closed system, the total momentum before an event is equal to the total momentum after the event. This means that the total momentum of all objects involved in a collision or interaction will remain constant, as long as there are no external forces acting on the system.

4. How is impulse related to momentum?

Impulse is the change in an object's momentum and is calculated by multiplying the force acting on the object by the time it acts. This can be represented by the equation J = Ft, where J is impulse, F is force, and t is time. Therefore, impulse is directly related to momentum as it is the force that causes a change in momentum.

5. How can I improve my understanding of momentum for the A-Level exam?

To improve your understanding of momentum for the A-Level exam, it is important to practice solving A-Level momentum questions and familiarize yourself with the formulas and principles involved. It is also helpful to review notes and examples from class and seek clarification from your teacher or peers if needed.

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