Respuesta :
The correct answer is 16.62m.
The acceleration brought on by gravity is the acceleration that an object experiences as a result of the gravitational attraction that attracts two objects. Since the SI unit for gravity and acceleration are the same, ms^-2 is used. The standard value for the earth's gravitational acceleration is represented by (g). At mean sea level, g has a standard value of 9.8 ms^-2.
a) Motion of egg is under gravity only so
v= initial speed
v= 4 m/s
b)
Time taken to reach the height point
t_1= v_0-v_top/2g = 4-0/9.8
=4/9.8=0.4
Maximum height attained by egg from the building's roof
h=v_0^2/2g=(4)^2/2×9.8=
=16/19.6=0.81
maximum height from ground
H=h+15.0m
=0.81+15.0=15.81m
Time taken to fall through a distance H is given by
t_2= √2H/g
= √2(15.81)/9.8
= √31.62/9.8
t_2=1.79
∴t=t_1+t_2
=0.4+1.79
=2.19 s
c)
d=h+h=0.81+0.81+15
=16.62
To learn more about acceleration due to gravity refer the link:
https://brainly.com/question/13683634
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