Assume that there is no air resistance and value of g=10ms-2 . a stone is dropped from rest wht will be its speed after 1 sec

Answer 1

There are a few basic kinematic equations that help with motion in one direction. The one that you need to solve this problem is

v = v_i + a * t

In other words, the velocity at a given time can be found be multiplying the acceleration times the number of seconds that have elapsed, then adding the initial velocity.

The initial velocity in this case is 0 since it's dropped from rest. The elapsed time is 1 second and the acceleration is 10, so the equation becomes

v = 0 + 10*1

v = 10 m/s