A particle is dropped from the top of a tower .it covers 40 m in last 2s. Find the height of the tower.
An express train travelled at an average speed of 100 km/hr, stopping for 3 minutes after every 75 km. How long did it take to reach its destination 600 km from the starting point?#include<stdio.h>int main(){FILE *fp;fp=fopen("trial", "r");return 0;}