Calculate speed, distance and time

When an object moves in a straight line at a steady speed, we can calculate its speed if we know how far it travels and how long it takes. This equation shows the relationship between speed, distance travelled and time taken: 
Speed is distance divided by the time taken. 
For example, a car travels 30 kilometres in 2 hours. 
Its speed is 30 ÷ 2 = 15km/hr. 

Formula used : 

Distance  = Speed * Time
Time = Distance / Speed
Speed = Distance / Time

Examples:

Input : distance(km) : 48.5  time(hr) : 2.6
Output : Speed(km / hr) : 18.653846153

Input : speed(km / hr) : 46.0  time(hr) : 3.2
Output : Distance(km) : 147.2

Input : distance(km) : 48.5  speed(km / hr) : 46.0
Output : Time(hr) : 1.0543

C++

// C++ Program to calculate speed
// distance and time
#include<iostream>
using namespace std;

// Function to calculate speed
double cal_speed(double dist, double time)
{
   cout << "\n Distance(km) : " << dist ;
   cout << "\n Time(hr) : " << time ;

   return dist / time;
}

// Function to calculate distance travelled
double cal_dis(double speed, double time)
{
   cout << "\n Time(hr) : " << time ;
   cout << "\n Speed(km / hr) : " << speed ;

   return speed * time;
}

// Function to calculate time taken
double cal_time(double dist, double speed)
{
   cout << "\n Distance(km) : "<< dist ;
   cout << "\n Speed(km / hr) : " << speed ;

   return  dist / speed;
}

// Driver function
int main()
{
   // Calling function cal_speed()
   cout << "\n The calculated Speed(km / hr) is : "
               << cal_speed(45.9, 2.0 ) << endl ;

   // Calling function cal_dis()
   cout << "\n The calculated Distance(km) : "
               << cal_dis(62.9, 2.5) << endl ;

   // Calling function cal_time()
   cout << "\n The calculated Time(hr) : "
        << cal_time(48.0, 4.5) << endl ;

    return 0;
}

Java

// Java Program to calculate speed
// distance and time

class GFG
{
    // Function to calculate speed
    static double cal_speed(double dist, double time)
    {
        System.out.print("\n Distance(km) : " + dist) ;
        System.out.print("\n Time(hr) : " + time) ;

        return dist / time;
    }

    // Function to calculate distance travelled
    static double cal_dis(double speed, double time)
    {
        System.out.print("\n Time(hr) : " + time) ;
        System.out.print("\n Speed(km / hr) : " + speed) ;

        return speed * time;
    }

    // Function to calculate time taken
    static double cal_time(double dist, double speed)
    {
        System.out.print("\n Distance(km) : "+ dist) ;
        System.out.print("\n Speed(km / hr) : " + speed) ;

        return dist / speed;
    }

    // Driver code
    public static void main (String[] args)
    {
        // Calling function cal_speed()
        System.out.println("\n The calculated Speed(km / hr) is : "+
                    cal_speed(45.9, 2.0 ));

        // Calling function cal_dis()
        System.out.println("\n The calculated Distance(km) : "+
                    cal_dis(62.9, 2.5));

        // Calling function cal_time()
        System.out.println("\n The calculated Time(hr) : "+
                cal_time(48.0, 4.5));
    }
}

// This code is contributed by Anant Agarwal.

Python3

# Python3 Program to calculate speed,
# distance and time

# Function to calculate speed
def cal_speed(dist, time):
    print(" Distance(km) :", dist);
    print(" Time(hr) :", time);
    return dist / time;

# Function to calculate distance travelled
def cal_dis(speed, time):
    print(" Time(hr) :", time) ;
    print(" Speed(km / hr) :", speed);
    return speed * time;

# Function to calculate time taken
def cal_time(dist, speed):
    print(" Distance(km) :", dist);
    print(" Speed(km / hr) :", speed);
    return dist / speed;

# Driver Code

# Calling function cal_speed()
print(" The calculated Speed(km / hr) is :",
                     cal_speed(45.9, 2.0 ));
print("");

# Calling function cal_dis()
print(" The calculated Distance(km) :",
                   cal_dis(62.9, 2.5));
print("");

# Calling function cal_time()
print(" The calculated Time(hr) :",
              cal_time(48.0, 4.5));

# This code is contributed
# by mits

C#

// C# Program to calculate speed
// distance and time
using System;

class GFG
{
    // Function to calculate speed
    static double cal_speed(double dist, double time)
    {
        Console.WriteLine(" Distance(km) : " + dist) ;
        Console.WriteLine(" Time(hr) : " + time) ;

        return dist / time;
    }

    // Function to calculate distance travelled
    static double cal_dis(double speed, double time)
    {
        Console.WriteLine(" Time(hr) : " + time) ;
        Console.WriteLine(" Speed(km / hr) : " + speed) ;

        return speed * time;
    }

    // Function to calculate time taken
    static double cal_time(double dist, double speed)
    {
        Console.WriteLine(" Distance(km) : "+ dist) ;
        Console.WriteLine(" Speed(km / hr) : " + speed) ;

        return dist / speed;
    }

    // Driver code
    public static void Main ()
    {
        // Calling function cal_speed()
    Console.WriteLine(" The calculated Speed(km / hr) is : "+
                    cal_speed(45.9, 2.0 ));

        // Calling function cal_dis()
        Console.WriteLine(" The calculated Distance(km) : "+
                    cal_dis(62.9, 2.5));

        // Calling function cal_time()
        Console.WriteLine(" The calculated Time(hr) : "+
                cal_time(48.0, 4.5));
    }
}

// This code is contributed by vt_m.

PHP

<?php
// PHP Program to calculate
// speed distance and time

// Function to calculate speed
function cal_speed($dist, $time)
{
echo "\n Distance(km) : " . $dist ;
echo "\n Time(hr) : " . $time ;

return $dist / $time;
}

// Function to calculate
// distance travelled
function cal_dis($speed, $time)
{
echo "\n Time(hr) : " . $time ;
echo "\n Speed(km / hr) : " . $speed ;

return $speed * $time;
}

// Function to calculate
// time taken
function cal_time($dist, $speed)
{
echo "\n Distance(km) : " . $dist ;
echo "\n Speed(km / hr) : " . $speed ;

return $dist / $speed   ;
}

// Driver Code

// Calling function cal_speed()
echo " The calculated Speed(km / hr) is : ".
                 cal_speed(45.9, 2.0 )."\n";

// Calling function cal_dis()
echo "\n The calculated Distance(km) : ".
                 cal_dis(62.9, 2.5)."\n";

// Calling function cal_time()
echo "\n The calculated Time(hr) : ".
            cal_time(48.0, 4.5)."\n";

// This code is contributed
// by mits
?>

Javascript

<script>


// Javascript Program to calculate speed
// distance and time

    // Function to calculate speed
    function  cal_speed( dist,  time)
    {
        document.write(" Distance(km) : " + dist + "<br>" ) ;
        document.write(" Time(hr) : " + time + "<br>") ;

        return dist / time;
    }

    // Function to calculate distance travelled
    function  cal_dis( speed,  time)
    {
        document.write(" Time(hr) : " + time + "<br>" ) ;
        document.write(" Speed(km / hr) : " + speed + "<br>") ;

        return speed * time;
    }

    // Function to calculate time taken
    function  cal_time( dist,  speed)
    {
        document.write(" Distance(km) : " + dist + "<br>") ;
        document.write(" Speed(km / hr) : " + speed + "<br>" ) ;

        return dist / speed;
    }

    // Driver code

        // Calling function cal_speed()
    document.write(" The calculated Speed(km / hr) is : "+
                    cal_speed(45.9, 2.0 ) + "<br>");
    document.write("<br>");

        // Calling function cal_dis()
        document.write(" The calculated Distance(km) : "+
                    cal_dis(62.9, 2.5) + "<br>");
        document.write("<br>");

        // Calling function cal_time()
        document.write(" The calculated Time(hr) : "+
                cal_time(48.0, 4.5) + "<br>");

</script>

Output

 Distance(km) : 45.9
 Time(hr) : 2
 The calculated Speed(km / hr) is : 22.95

 Time(hr) : 2.5
 Speed(km / hr) : 62.9
 The calculated Distance(km) : 157.25

 Distance(km) : 48
 Speed(km / hr) : 4.5
 The calculated Time(hr) : 10.6667

Time Complexity: O(1) 
Auxiliary Space: O(1)