Statements on Collisions – Rankers Physics

Collision: Practice Problem & Solution

Consider the given statements and choose the correct option that follows: Statement 1: During a collision the total linear momentum of system is conserved at each instant of collision. Statement 2: During a collision the kinetic energy conservation holds always. Based on above information, pick the correct option.  
Both statements (1) and (2) are true
Both statements (1) and (2) are false
Statement (1) is true but (2) is false
Statement (1) is false but (2) is true

Solution Explained:

To solve this problem, we apply the core principles of Collision. Understanding the underlying formula is key to arriving at the correct answer below:

Total linear momentum is conserved at each instant of collision because no external forces act. Kinetic energy, however, is not conserved during the period of deformation, and is conserved after only in perfectly elastic collisions. Thus, Statement 1 is true and Statement 2 is false.

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