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Brilliant_brown [7]
3 years ago
15

A ball is ejected to the right with an unknown horizontal velocity from the top of a pillar that is 50 meters in height. At the

exact instant, a carriage moving on rails is also released to the right from the bottom of the pillar. Calculate the velocity with which the carriage should be released so that the ball falls in the carriage after the carriage has traveled a distance of 50 meters on the ground.
A. 12.20 meters/ seconds
B. 13.23 meters/ seconds
C. 14.30 meters/ seconds
D. 15.65 meters/ seconds**
E. 16.00 meters/ seconds

I believe D is right = 15.65m/s
Also ** on Plato
Physics
2 answers:
jeka943 years ago
5 0
D!!!!!!! Is the correct one ....!!!!!! ...
Illusion [34]3 years ago
3 0

Answer:

D. 15.65 meters/ seconds**

Explanation:

You're correct. Use kinematic equation to find V_final.

{v}^{2}  =  {v 0}^{2}  + 2a(xf - x0)

Then use the following to find time.

t = (vf - v0) \div a

Then 50m/3.2s = 15.65m/s

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The answer is:  " 208 g " .
_____________________________________________
Explanation:
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The formula/ equation for density is:
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   in which:

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     "m" refers to the "mass" , in units of "g" (grams), which is unknown; and we want to find this value;
                 
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             And we rearrange; to isolate "m" (mass) on ONE side of the    equation; and then we plug in our known/given values;
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