Aball is dropped off the side of a bridge after falling 1.55 s, what is its velocity.

v = 15.19 m/s

Explanation:

As we know that when object is dropped from some height then initial speed of the object is taken as

now for the final speed of object we can say that if acceleration is constant then the final speed will be given by kinematics equation

here we have

(due to gravity)

now from this equation of motion

as we probably am aware that our atmosphere or air have various levels, each level has different gasses, and each gas has another porousness. at the point when the light originates from lower porousness to higher penetrability, it alters its course. with the goal that implies that when the light originates from the moon to the earth, it alters it's course a lot more occasions. it essentially implies that the state of the light piece of the moon is changed on the earth.

not copied too! hope this !

joke:

h o h o hope you have a merry christmas!