write C++ program. Suppose Dave drops a watermelon off a high bridge and lets it

Question

write C++ program.

Suppose Dave drops a watermelon off a high bridge and lets it fall   until it hits the water. If we neglect air resistance, then the distance d in meters fallen by the watermelon after t seconds is d = 0.5 * g * t2, where the acceleration of gravity g = 9.8 meters/second2. Write a program that asks the user to input the number of seconds that the watermelon falls and the height h of the bridge above the water. The program should then calculate the distance fallen for each second from t = 0 until the value of t input by the user. If the total distance fallen is greater than the height of the bridge, then the program should tell the user that the distance fallen is not valid.

Sample Run 1:

Please input the time of fall in seconds:

2

Please input the height of the bridge in meters:

100

Time Falling (seconds) Distance Fallen (meters)

*******************************************

0 0

1 4.9

2 19.6

Sample Run 2:

Please input the time of fall in seconds:

4

Please input the height of the bridge in meters:

50

Time Falling (seconds) Distance Fallen (meters)

*******************************************

0 0

1 4.9

2 19.6

3 44.1

4 78.4

Warning-Bad Data: The distance fallen exceeds the height of the bridge

Explanation / Answer

#include <iostream>

#include <iomanip>

using namespace std;

int main() {

const double GRAVITY = 9.8; // given acceleration due to gravity

int input_s; //the user-given time of fall

double input_h; // the user-given fall height

// ask for those inputs

cout << "Please input the time of fall in seconds: ";

cin >> input_s;

cout << "Please input the height of the bridge in meters: ";

cin >> input_h;

// draw the first part of the table

cout << ' '

<< "Time Falling (seconds) Distance Fallen (meters) "

"*********************************************** ";

// " (23) (24) "

int step_seconds = 0; // which second of the simulation we're on

double step_distance = 0; // this showshow far the melon has come so far

bool bad_estimate = false; // whether or not we go over input_h

while ( step_seconds <= input_s) {

// output what step we're on and our distance traveled so far

cout << setw(23) << left << step_seconds

<< setw(24) << left << step_distance << ' ';

// check to see if that distance traveled is past user-input height

if ( step_distance > input_h ) {

bad_estimate = true;

}

// do calculation for the next step

step_seconds += 1;

step_distance = 0.5 * GRAVITY * (step_seconds) * (step_seconds);

}

cout << ' '; // make our output prettier

if ( bad_estimate ) { // warning

cout << "Warning - Bad Data: The distance fallen exceeds the height"

" of the bridge. ";

}

return 0;

}

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