- #1
wsbkp08
- 3
- 0
1. Homework Statement
Hi, guys.
I did a project but questions are killing me right now.
I was going all the tutorials but I really have no idea.
What we did was water rocket project.
Here are the data
Ttotal - avg. 9.96 sec.
Avg. Apogee - 2.94 sec.
2. Homework Equations
3. The Attempt at a Solution
I need to find the v initial, ymax, and the maximum range.
Here is how I did it
For Vinitial
DeltaY(0) =(Vinitial)(5.88)+(1/2)(-9.8)(5.88)^2
Vinital = 28.8m/s
5.88sec comes from avg. apogeeX2 ------> (2.94)(2)
For Ymax,
Ymax= (Vinital)(time)+(1/2)(-9.8)(time)
(28.8)(2.94)+(1/2)(-9.8)(2.94)^2
= 42.3 m
For maximum Range,
I found out that cos 45 will give me maximum range so
Range=(Vinital)(cos45)(time)
(28.8)(cos45)(5.88)
= 119.7 m
Lastly, my teacher asked, "What role does the water play in making the rocket move?"
He also asked for relevant formulas and a diagram illustrating the forces.
Only thing we learned so far are Horizontal Projectil motion and free fall.
I do not think we ever learned this.
Can you please help me with this? I've been working for entire day!
Thanks guys.
Hi, guys.
I did a project but questions are killing me right now.
I was going all the tutorials but I really have no idea.
What we did was water rocket project.
Here are the data
Ttotal - avg. 9.96 sec.
Avg. Apogee - 2.94 sec.
2. Homework Equations
3. The Attempt at a Solution
I need to find the v initial, ymax, and the maximum range.
Here is how I did it
For Vinitial
DeltaY(0) =(Vinitial)(5.88)+(1/2)(-9.8)(5.88)^2
Vinital = 28.8m/s
5.88sec comes from avg. apogeeX2 ------> (2.94)(2)
For Ymax,
Ymax= (Vinital)(time)+(1/2)(-9.8)(time)
(28.8)(2.94)+(1/2)(-9.8)(2.94)^2
= 42.3 m
For maximum Range,
I found out that cos 45 will give me maximum range so
Range=(Vinital)(cos45)(time)
(28.8)(cos45)(5.88)
= 119.7 m
Lastly, my teacher asked, "What role does the water play in making the rocket move?"
He also asked for relevant formulas and a diagram illustrating the forces.
Only thing we learned so far are Horizontal Projectil motion and free fall.
I do not think we ever learned this.
Can you please help me with this? I've been working for entire day!
Thanks guys.
Last edited: