A 53 kg sprinter, starting from rest, runs 41 m in 7.0 s at constant acceleration. Part A What is the magnitude of the horizontal force acting on the sprinter? Express your answer to two significant figures and include the appropriate units. F, = 89 N Submit Previous Answers v Correct Correct answer is shown. Your answer 88.51 N was either rounded differently or used a different number of significant figure: Part B What is the sprinter's power output at 2.0 s, 4.0 s, and 6.0 s? Express your answers using two significant figures separated by commas. ? P(2.0), P(4.0), P(6.0) = 257,128,85.6 kW Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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part B, please.

**Physics Problem: Sprinting and Force Calculation**

A 53 kg sprinter, starting from rest, runs 41 meters in 7.0 seconds with constant acceleration.

**Part A: Force Calculation**

- **Question:** What is the magnitude of the horizontal force acting on the sprinter?
  
  - **Answer Format:** Express your answer to two significant figures and include the appropriate units.
  
  - **Submitted Answer:** \( F_x = 89 \, \text{N} \)
  
  - **Feedback:** Correct. The calculated answer was 88.51 N, rounded to two significant figures.

**Part B: Power Output Calculation**

- **Question:** What is the sprinter’s power output at 2.0 seconds, 4.0 seconds, and 6.0 seconds?
  
  - **Answer Format:** Express your answers using two significant figures, separated by commas.
  
  - **Submitted Answers:** \( P(2.0), P(4.0), P(6.0) = 257, 128, 85.6 \, \text{kW} \)
  
  - **Feedback:** Incorrect. You have 5 attempts remaining to correct your answer.

This exercise involves calculating the force acting on a sprinter using basic kinematic equations and examining the power output at specified time intervals.
Transcribed Image Text:**Physics Problem: Sprinting and Force Calculation** A 53 kg sprinter, starting from rest, runs 41 meters in 7.0 seconds with constant acceleration. **Part A: Force Calculation** - **Question:** What is the magnitude of the horizontal force acting on the sprinter? - **Answer Format:** Express your answer to two significant figures and include the appropriate units. - **Submitted Answer:** \( F_x = 89 \, \text{N} \) - **Feedback:** Correct. The calculated answer was 88.51 N, rounded to two significant figures. **Part B: Power Output Calculation** - **Question:** What is the sprinter’s power output at 2.0 seconds, 4.0 seconds, and 6.0 seconds? - **Answer Format:** Express your answers using two significant figures, separated by commas. - **Submitted Answers:** \( P(2.0), P(4.0), P(6.0) = 257, 128, 85.6 \, \text{kW} \) - **Feedback:** Incorrect. You have 5 attempts remaining to correct your answer. This exercise involves calculating the force acting on a sprinter using basic kinematic equations and examining the power output at specified time intervals.
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