We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
53
1
avatar

A ball is thrown horizontally from the top of a building 36.7 m high. The ball strikes the ground at a point 91.9 m from the base of the building. Find the y component of its velocity just before it strikes the ground.

 Oct 29, 2019

Best Answer 

 #1
avatar+19832 
+2

Thrown horizontally....how long before it his the ground?

 

x = x0 + vi t+ 1/2 a t2     x = 0     xo = 36.7 m   vi =0   a = -9.81 m/s2

 

 

0=36.7 + 1/2 (-9.81) t2         solve for t = 2.735 seconds

 

vf = vo + at

vf = 0 -9.81(2.735) = -26.83 m/s   (negative because it is in downward direction)    if ya just want the magnitude: 26.83 m/s

 Oct 29, 2019
 #1
avatar+19832 
+2
Best Answer

Thrown horizontally....how long before it his the ground?

 

x = x0 + vi t+ 1/2 a t2     x = 0     xo = 36.7 m   vi =0   a = -9.81 m/s2

 

 

0=36.7 + 1/2 (-9.81) t2         solve for t = 2.735 seconds

 

vf = vo + at

vf = 0 -9.81(2.735) = -26.83 m/s   (negative because it is in downward direction)    if ya just want the magnitude: 26.83 m/s

ElectricPavlov Oct 29, 2019

14 Online Users

avatar
avatar