Q.64

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Found in: Page 230

### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

Book edition 4th
Author(s) Randall D. Knight
Pages 1240 pages
ISBN 9780133942651

# A Porsche Turbo has a rated engine power of hp. of the power is lost in the drive train, and reaches the wheels. The total mass of the car and driver is , and two-thirds of the weight is over the drive wheels. a. What is the maximum acceleration of the Porsche on a concrete surface where ? Hint: What force pushes the car forward? b. If the Porsche accelerates at , what is its speed when it reaches maximum power output? c. How long does it take the Porsche to reach the maximum power output?

a. The maximum acceleration of Porsche is .

b. The speed at the time of maximum power output is .

c. The Porsche take to reach maximum output.

See the step by step solution

## Step 1: Content Introduction

The relation between power and velocity is

## Step 2: Explanation (Part a)

The power of Porsche in Watt is

The gravitational force on the car is

The force on drive wheel is

the static friction of tyres on road is

## Step 3: Explanation (Part b)

The wheel on use of the power generated by the motor. Therefore, the power output is

## Step 4: Explanation (Part c)

Considering the following kinematics equation,