A skater is using very low friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coasting. Describe each of the following events as an elastic, an inelastic, or a perfectly inelastic collision between the skater and the Frisbee. (a) She catches the Frisbee and holds it. Oelastic OInelastic Operfectly inelastic (b) She tries to catch the Frisbee, but it bounces off her hands and fals to the ground in front of her Oelastic Onelastic Operfectly inelastic (c) She catches the Frisbee and immediately throws it back with the same speed (relative to the ground) to her friend. Oelastic Oinelastic Operfectly inelastic

A skater is using very low friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coasting. Describe each of the following events as an elastic, an inelastic, or a perfectly inelastic collision between the skater and the Frisbee. (a) She catches the Frisbee and holds it. Oelastic OInelastic Operfectly inelastic (b) She tries to catch the Frisbee, but it bounces off her hands and fals to the ground in front of her Oelastic Onelastic Operfectly inelastic (c) She catches the Frisbee and immediately throws it back with the same speed (relative to the ground) to her friend. Oelastic Oinelastic Operfectly inelastic

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

### Understanding Collisions: Elastic, Inelastic, and Perfectly Inelastic

A skater is using very low friction rollerblades. A friend throws a Frisbee at her, on the straight line along which she is coasting. Describe each of the following events as an elastic, an inelastic, or a perfectly inelastic collision between the skater and the Frisbee.

**(a)** She catches the Frisbee and holds it.
- Elastic
- Inelastic
- Perfectly inelastic

**(b)** She tries to catch the Frisbee, but it bounces off her hands and falls to the ground in front of her.
- Elastic
- Inelastic
- Perfectly inelastic

**(c)** She catches the Frisbee and immediately throws it back with the same speed (relative to the ground) to her friend.
- Elastic
- Inelastic
- Perfectly inelastic

### Explanation

1. **Elastic Collision**: Both momentum and kinetic energy are conserved. The objects bounce off each other with no deformation or generation of heat.

2. **Inelastic Collision**: Momentum is conserved, but kinetic energy is not. The objects may bounce off, but energy is lost to sound, heat, or deformation.

3. **Perfectly Inelastic Collision**: This is a type of inelastic collision where the colliding objects stick together after the collision, maximizing energy loss.

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