A stone is dropped from rest in to a well it is observed to hit the water after 2seconds .Find the distance down the water surface. How are fast must the stone thrown downwards in order to hit the surface after only 1second?.what are are the impact velocities in the two cases g=10meter per second square.

explanation:

considering the bohr theory, the type of connection that requires the transfer the answer conuldn't be right

cant without the picture! ?

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards