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A marble rolls off horizontally from the edge of table top 1.50 m above the floor. it strikes the floor 2.0 m from the base of the table. (a) how long does it take the marble to reach the floor? (b) What is its initial speed?
please help me masters(;´༎ຶٹ༎ຶ`)​

Respuesta :

ardni313

a. t=0.553 s

b. vox(horizontal speed) = 3.62 m/s

Further explanation

Given

h = 1.5 m

x = 2 m

Required

a. time

b. vo=initial speed

Solution

Free fall motion

a. h = 1/2 gt²(vertical motion=h=voyt+1/2gt²⇒voy = 0)

[tex]\tt t=\sqrt{\dfrac{2h}{g} }[/tex]

t = √2h/g

t = √2.1.5/9.8

t=0.553 s

b. x=vox.t(horizontal motion)

[tex]\tt x=v_{ox}\times t[/tex]

vox=x/t

vox=2/0.553

vox=3.62 m/s

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