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a ball is thrown horizontally from a 20 m high building with a speed of 5.0 m/s. How far from the base of the building does the ball hit the ground?

a ball is thrown horizontally from a 20 m high building with a speed of 50 ms How far from the base of the building does the ball hit the ground class=

Respuesta :

johnwallace23
Given:
Dy= 20 m
Vi = 5.0 m/s horizontally
A=9.81 m/s^2

Find:
Horizontal displacement

Solution:
D=ViT+(1/2)AT^2
Dy=(1/2)AT^2
T^2=Dy/(1/2)A
T=sqrt(Dy/(1/2)A)
T=sqrt(20/4.905)
T=2.0s

Dx=ViT
Dx=(5.0)(2.0)
Dx=10. meters

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