×
Get Full Access to University Physics - 13 Edition - Chapter 6 - Problem 90p
Get Full Access to University Physics - 13 Edition - Chapter 6 - Problem 90p

×

# Rescue. Your friend (mass 65.0 kg) is standing on the ice

ISBN: 9780321675460 31

## Solution for problem 90P Chapter 6

University Physics | 13th Edition

• Textbook Solutions
• 2901 Step-by-step solutions solved by professors and subject experts
• Get 24/7 help from StudySoup virtual teaching assistants

University Physics | 13th Edition

4 5 1 364 Reviews
13
4
Problem 90P

Rescue?. Your friend (mass 65.0 kg) is standing on the ice in the middle of a frozen pond There is very little friction between her feet and the ice, so she is unable to walk. Fortunately, a light rope is tied around her waist and you stand on the bank holding the other end. You pull on the rope for 3.00 s and accelerate your friend from rest to a speed of 6.00 m/s while you remain at rest. What is the average power supplied by the force you applied?

Step-by-Step Solution:

Solution 90P Step 1: Her mass is 65 kg. Initially she was at rest and by pulling her final velocity reached to 6 m/s. The change in kinetic energy is, K.E = K.E K.E final initial 2 2 = 1/2 × m × (V f V i 2 = 1/2 × 65 × (6 0) = 0.5 × 65 × 36 = 1170 J .

Step 2 of 3

Step 3 of 3

## Discover and learn what students are asking

Calculus: Early Transcendental Functions : Inverse Trigonometric Functions: Integration
?In Exercises 1-20, find the indefinite integral. $$\int \frac{1}{4+(x-3)^{2}} d x$$

#### Related chapters

Unlock Textbook Solution