## natasha.aries Group Title ***I WILL GIVE BEST ANSWER!***HEYY! CAN SOMEONE PLEASE HELP ME WITH THIS QUESTION!? I HAVE A TEST COMING UP AND I AM SOO CONFUZZLED! PLEASE INCLUDE THE NUMBERS AND SOLUTIONS IN ANSWER! (please dont round) 11 months ago 11 months ago

1. natasha.aries Group Title

2. natasha.aries Group Title

The question is what is the height of where the collision takes place!

3. RANE Group Title

r u given the answer ?

4. natasha.aries Group Title

5. RANE Group Title

ahan well i dis q's like this last year , i think i remember it

6. natasha.aries Group Title

really!? how do u do it!?

7. RANE Group Title

i think so, let me try first

8. natasha.aries Group Title

okay! thankk youu!

9. natasha.aries Group Title

i get a few tries to see if i got the question right so if you give me an answer i could put it in and see if youre right. and then you could explain it! but you cant round on anything! and this is only if youre willing to help me! sorry

10. RANE Group Title

ok i did it and i got 91.6m but im not sure if thats the answer

11. natasha.aries Group Title

did you round anything?

12. RANE Group Title

nop

13. RANE Group Title

was i suppose to?

14. natasha.aries Group Title

nope! okay let me check

15. natasha.aries Group Title

nope its wrong :(

16. RANE Group Title

17. natasha.aries Group Title

idk i can put in answers and it will tell me if its right or wrong

18. RANE Group Title

idk then i cant figure out any other way to do it

19. natasha.aries Group Title

its okay thanks anyways!

20. RANE Group Title

np:) but dont u have nay clue wht could be the answer around ?

21. natasha.aries Group Title

absolutely no idea lol

22. RANE Group Title

have u done q's like that before?

23. natasha.aries Group Title

not as hard!

24. natasha.aries Group Title

this one is really complex

25. RANE Group Title

sure it is

26. RANE Group Title

maybe he can help @UnkleRhaukus

27. natasha.aries Group Title

28. oksuz_ Group Title

|dw:1380448186791:dw| You know Vx and d. So you can calculate time t. Then you can find what the AP is by using $\left| AP \right| =\frac{ g*t ^{2} }{ 2 }$ Then you can calculate BP easily. |BP|=|AB|-|AP|

29. CarlosGP Group Title

For target:$h_t=h_0-1/2g t^2$For bullet$h_b=v_0\sin(\theta)t-1/2g t^2$At time t_c both bodies collide:$h_b=h_t \rightarrow v_0\sin(\theta)t_c-1/2g t_c^2=h_0-1/2g t_c^2 \rightarrow t_c=\frac{ h_0 }{ v_0\sin(\theta) }$and at that moment, target is at:$h_t(t_c)=h_0-\frac{ 1 }{ 2 }g \left( \frac{ h_0 }{ v_0\sin(\theta) } \right)^2=91.7-4.9·\left( \frac{ 91.7 }{ 109·\sin(48.4)} \right)^2$

30. CarlosGP Group Title

and during time t_c, bullet has to cover distance "d". Let us see:$x(t=t_c)=v_0\cos(\theta)t_c=v_0\cos(\theta)\frac{ h_0 }{ v_0\sin(\theta) }=h_0/\tan(\theta)=d$