Una estudiante lanza una caja con llaves verticalmente hacia arriba, a su hermana ubicada en una ventana de un club femenino, a 4 metros de altura sobre el nivel del piso. La hermana
atrapa la caja 1,5 segundos después de haber sido lanzado. ¿Cuál es la velocidad inicial- en m/s-
con que fue lanzada la caja de llaves? Considerar g= 10 m/s2.
a) 8,2
b) 9,2
c) 10,2
d) 11,2
e) 12,2​

since the airplane is moving with constant speed then the distance travelled can be calculated by x=u*t

in km/h would be:

x=640*3.5=2.240 km

in m/s would be:

u=640 km/h= 640.000 m/h =640.000/ 3600 m/s =177.8 m/s

t= 3.5 h= 3.5 * 3600 s=12.600 s

then x=u*t= 177.8*12.600= 2.240.280 m

understand that i don't know the answers

will someone answer his question

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi

step-by-step explanation:

the triangles are similar. therefore the corresponding sides are in proportion:

              cross multiply

            divide both sides by 32