---
title: "Consider the following cases of inelastic collisions.   Case (1) – A car moving at \\(75 \\, \\text{mph}\\) collides with another car of equal mass moving at \\(75 \\, \\text{mph}\\) in the opposite direction and comes to a stop.   Case (2) A car moving at \\(75 \\, \\text{mph}\\) hits a stationary steel wall and rolls back.   The collision time is the same for both cases. In which of these cases would result in the greatest impact force?"
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url: "https://nerd-notes.com/ubq/22812/"
date_modified: "2025-11-19T21:33:06+00:00"
---

# Consider the following cases of inelastic collisions.  
Case (1) – A car moving at \(75 \, \text{mph}\) collides with another car of equal mass moving at \(75 \, \text{mph}\) in the opposite direction and comes to a stop.  
Case (2) A car moving at \(75 \, \text{mph}\) hits a stationary steel wall and rolls back.  
The collision time is the same for both cases. In which of these cases would result in the greatest impact force?

Consider the following cases of inelastic collisions.
 Case (1) – A car moving at \(75 \, \text{mph}\) collides with another car of equal mass moving at \(75 \, \text{mph}\) in the opposite direction and comes to a stop.
 Case (2) A car moving at \(75 \, \text{mph}\) hits a stationary steel wall and rolls back.
 The collision time is the same for both cases. In which of these cases would result in the greatest impact force?

- **A.** Case 1
- **B.** Case 2
- **C.** Equal force in both case 1 and case 2
- **D.** More information is needed to calculate the force
- **E.** None of these choices.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/22812/*