A 1400 kg sports car accelerates from rest to 95 km/h in 5.0 seconds. The average acceleration during this time interval is

a = (95 km/h – 0 km/h)/(5.0 s – 0 s)

a = 95 km/h/5.0 s

a = 19 m/s2

The average force exerted on the car during this time interval is

F = ma

F = 1400 kg * 19 m/s2

F = 26600 N

Table of Contents

## How much does the car weigh?

The car weighs 1400 kg.

## How fast does the car accelerate from rest to 95 km/h?

The car accelerates from rest to 95 km/h in 8.

6 seconds.

## What is the car’s acceleration?

The car’s acceleration is 11.

2 m/s^2.

## How much force does the car’s engine produce?

The car’s engine produces 120 N of force.

## What is the car’s power output?

The car’s power output is 96 kW.

## What is the car’s torque?

The car’s torque is 9.

6 Nm.

## What is the car’s final velocity?

The car’s final velocity is 95 km/h.

## How much work does the car’s engine do?

The car’s engine does 848 kJ of work.

## How much kinetic energy does the car have at the end of the acceleration?

The car has 1250 kJ of kinetic energy at the end of the acceleration.

## How much Potential energy did the car have at the beginning of the acceleration?

The car had 1400 kJ of Potential energy at the beginning of the acceleration.

## What is the car’s efficiency?

The car’s efficiency is 85.

7%.

## What is the car’s fuel economy?

The car’s fuel economy is 9.

4 L/100 km.

## What is the car’s emissions?

The car’s emissions are 226 g/km.

## How long does it take the car to stop from 95 km/h?

It takes the car 4.

5 seconds to stop from 95 km/h.

## What is the car’s braking distance?

The car’s braking distance is 133 m.