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# Solved: (a) How long will it take an 850-kg car with a ISBN: 9781938168000 42

## Solution for problem 38PE Chapter 7

College Physics | 1st Edition

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Problem 38PE

Problem 38PE

(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a speed of 15.0 m/ s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?

Step-by-Step Solution:
Step 1 of 3<p>First calculate the time required to accelerate a car with mass 850 kg and power output 40.0 hp from zero to 15 m/s.

Then calculate the time required for the car to climb 3.00 m height.

Ignore the friction in all this case.

(a)Step 2 of 3<p>The power output of the car is The mass of the car is kg and the velocity is m/s. Now the energy of the car when the velocity of the car is 15 m/s is So the time taken to accelerate is So, the car will take 3.21 s to reach 15 m/s.

(b)
Step 3 of 3

##### ISBN: 9781938168000

Since the solution to 38PE from 7 chapter was answered, more than 689 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: College Physics , edition: 1. The full step-by-step solution to problem: 38PE from chapter: 7 was answered by , our top Physics solution expert on 07/07/17, 04:39PM. College Physics was written by and is associated to the ISBN: 9781938168000. This full solution covers the following key subjects: Car, take, long, neglecting, Friction. This expansive textbook survival guide covers 34 chapters, and 3125 solutions. The answer to “(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1 hp = 746 W) to reach a speed of 15.0 m/ s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?” is broken down into a number of easy to follow steps, and 50 words.

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