Astone is dropped from the top of a cliff. the splash it makes when striking the water below is heard 3.0s later. how high is the cliff?

m

Explanation:

Consider the motion of the stone in vertical direction:

= initial velocity = 0 m/s

= acceleration due to gravity = 9.8 m/s²

= time taken  to hit the water below

= vertical height of the cliff

Using the kinematics equation

                          eq-1

consider the motion of sound from water in upward direction

= Speed of sound = 343 m/s

= time of travel for sound

Using the equation

                                eq-2

we have been given that

Using eq-1 and eq-2

m

atomic = no of protons.

mass number-atomic number = neutron number

6 cos 34, 6 sin 34 trig