Alittle boy is standing at the edge of a steep vertical cliff. he throws a ball at an angle of 40◦ with respect to the horizontal at an initial speed of 20 m/s. at a certain moment, the ball has fallen 5 m below the level at which it was thrown.

boy throws the ball with speed 20 m/s at an angle 40 degree

so the components are given as

now the time taken by the ball to drop down by 5 m is given as

now by solving above quadratic equation we have

now in the same time the distance traveled horizontally is given as

so it will cover 5.3 m horizontally while it is dropped down by distance 5 m and it will take 0.345 s for the whole.

the body's situation won't change the forces are equal opposit and on the same body

see earlier answer