charan1
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Im doing Final exam review this is the first question please check! Thank you!
1. Water balloon drop. You and your physics major roommate devise a plan to drop water balloons on
classmates entering your dorm. Just as they cross a mark that’s 3.0 m from the door, you’ll drop a water
balloon. How high above the classmates entering the front door do you need to be to carry out your plan?
You’ve determined that most students walk at a speed of about 1.5 m/s.
yf=yi+Vi(delta T)+(1/2)g(delta T)^2
(delta x)/ T = Velocity
3 meters / 1.5 m/s = 2 seconds = T
yf=0 ; yi=? ; Vi=0 ; Delta T = 2 s
0=yi+(0)(2)+(.5)g(2)^2
yi=19.6m
To drop the balloons the students have to be 19.6 meters high to hit their target!
Homework Statement
1. Water balloon drop. You and your physics major roommate devise a plan to drop water balloons on
classmates entering your dorm. Just as they cross a mark that’s 3.0 m from the door, you’ll drop a water
balloon. How high above the classmates entering the front door do you need to be to carry out your plan?
You’ve determined that most students walk at a speed of about 1.5 m/s.
Homework Equations
yf=yi+Vi(delta T)+(1/2)g(delta T)^2
(delta x)/ T = Velocity
The Attempt at a Solution
3 meters / 1.5 m/s = 2 seconds = T
yf=0 ; yi=? ; Vi=0 ; Delta T = 2 s
0=yi+(0)(2)+(.5)g(2)^2
yi=19.6m
To drop the balloons the students have to be 19.6 meters high to hit their target!