#include <stdio.h>
double calculateSpeed(double t);

void main()

{

    double t;
    printf("Enter a time value to calculate the velocity: \n");
    scanf("%lf", &t);
    printf("At time %3.2f,", t);
    printf(" the speed of the plane is %3.5f m/s", calculateSpeed(t));

}

double calculateSpeed(double t)

{

    double v = 0.00001*t*t*t - 0.00488*t*t + 0.75795*t + 181.3566;
    return v;

}