College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question

The image attached, please answer question 1 parts a and b. 

**Work and Simple Machines** 1) We left off with the car example in lecture when our car (m=2000 kg) had a speed of \( v_i = 0.24 \, \text{m/s} \) and the engine force \( F_e = 70 \, \text{N} \) and wind resistance \( = -70 \, \text{N} \). Now let's see what happens if we decrease the engine force to 50N, as shown below. *Diagram Explanation:* - The diagram shows a car at two different points: - **Initial Position:** A car with forces indicated. The engine force \( F_e = 50 \, \text{N} \) is shown with an arrow in the direction of motion. The wind resistance \( = -70 \, \text{N} \) acts opposite to the direction of motion. - **Final Position:** The car comes to rest with a final velocity \( v_f = 0 \, \text{m/s} \). a) Is the car speeding up or slowing down? b) Find the distance the car will move as it comes to rest.
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Transcribed Image Text:**Work and Simple Machines** 1) We left off with the car example in lecture when our car (m=2000 kg) had a speed of \( v_i = 0.24 \, \text{m/s} \) and the engine force \( F_e = 70 \, \text{N} \) and wind resistance \( = -70 \, \text{N} \). Now let's see what happens if we decrease the engine force to 50N, as shown below. *Diagram Explanation:* - The diagram shows a car at two different points: - **Initial Position:** A car with forces indicated. The engine force \( F_e = 50 \, \text{N} \) is shown with an arrow in the direction of motion. The wind resistance \( = -70 \, \text{N} \) acts opposite to the direction of motion. - **Final Position:** The car comes to rest with a final velocity \( v_f = 0 \, \text{m/s} \). a) Is the car speeding up or slowing down? b) Find the distance the car will move as it comes to rest.
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