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A ball with an initial velocity of 12.5 m/s and mass 1.8 kg moves at an angle 68° above the horizontal. The ball hits a vertical wall and bounces off so that it is again moving at 68° above the horizontal with the same speed. See the figure. What is the magnitude of the impulse delivered by the wall, in kilogram meters per second?

A ball with an initial velocity of 12.5 m/s and mass 1.8 kg moves at an angle 68° above the horizontal. The ball hits a vertical wall and bounces off so that it is again moving at 68° above the horizontal with the same speed. See the figure. What is the magnitude of the impulse delivered by the wall, in kilogram meters per second?

College Physics
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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A ball with an initial velocity of 12.5 m/s and mass 1.8 kg moves at an angle 68° above the horizontal. The ball hits a vertical wall and bounces off so that it is again moving at 68° above the horizontal with the same speed. See the figure.

What is the magnitude of the impulse delivered by the wall, in kilogram meters per second? 


The diagram illustrates the reflection of two rays of light from a flat surface. The following elements are present in the diagram: 1. **Light Sources**: Two black circles on the left represent the sources of the incident rays. 2. **Incident Rays**: Two arrows pointing towards the surface indicate the path of the light before reflection. They approach the surface at an angle. 3. **Reflected Rays**: The arrows continuing away from the surface illustrate the path of the light after reflection. 4. **Angle of Incidence and Reflection**: The angles \(\theta\) are shown between the incident ray and a dashed line that acts as the normal to the surface. These angles match the angles formed between the reflected ray and the normal, illustrating the law of reflection, which states that the angle of incidence is equal to the angle of reflection. 5. **Surface**: The vertical line on the right represents the reflective surface from which the light rays bounce off. The dashed lines help to visualize the measurement of the angles with respect to an imagined perpendicular line to the surface, showing the symmetry in the angles of incidence and reflection.
Transcribed Image Text:The diagram illustrates the reflection of two rays of light from a flat surface. The following elements are present in the diagram: 1. **Light Sources**: Two black circles on the left represent the sources of the incident rays. 2. **Incident Rays**: Two arrows pointing towards the surface indicate the path of the light before reflection. They approach the surface at an angle. 3. **Reflected Rays**: The arrows continuing away from the surface illustrate the path of the light after reflection. 4. **Angle of Incidence and Reflection**: The angles \(\theta\) are shown between the incident ray and a dashed line that acts as the normal to the surface. These angles match the angles formed between the reflected ray and the normal, illustrating the law of reflection, which states that the angle of incidence is equal to the angle of reflection. 5. **Surface**: The vertical line on the right represents the reflective surface from which the light rays bounce off. The dashed lines help to visualize the measurement of the angles with respect to an imagined perpendicular line to the surface, showing the symmetry in the angles of incidence and reflection.
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