Question

ans is 20i it is from kinmatics​

Answer 1

Answer:

Its easy u just have to analyze the problem.....see velocity is y axis is 10 so in nxt 1 sec the velocity in y axis decreases to 0 but we all know that in a projectile the velocity in x axis is always constant so in nxt 1 sec it will be only 20m/s so after 1 sec the velocity will be 20i+0j