#include <stdio.h>
#include <math.h>
 
#define G 9.8 // Percepatan gravitasi dalam m/s^2
#define PI 3.14159265358979323846 // Nilai Pi
 
int main() {
    float v_awal; // Kecepatan awal
    float sudut_rad; // Sudut dalam radian
    float waktu; // Waktu tempuh
 
    // Memberikan informasi kepada pengguna
    printf("Program untuk menghitung waktu mencapai jarak horizontal terjauh.\n");
    printf("Jarak horizontal terjauh dicapai saat sudut elevasi 45 derajat.\n");
    printf("------------------------------------------------------------------\n");
 
    // Meminta pengguna memasukkan kecepatan awal
    printf("Masukkan kecepatan awal (dalam m/s): ");
    scanf("%f", &v_awal);
 
    // Menetapkan sudut 45 derajat (dalam radian)
    sudut_rad = 45.0 * (PI / 180.0);
 
    // Menghitung waktu tempuh
    waktu = (2 * v_awal * sin(sudut_rad)) / G;
 
    // Menampilkan hasil
    printf("------------------------------------------------------------------\n");
    printf("Dengan kecepatan awal %.2f m/s, waktu yang diperlukan untuk mencapai jarak horizontal terjauh adalah %.2f detik.\n", v_awal, waktu);
 
    return 0;
}
 
 

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