# Physics

Upon a flat only 10 m high (Is that possible?) there are two guns A and B attached together making a vertical angle of 60 degrees when A is flat on roof. They fire at the same time and has the same reloading time. Both guns are capable of giving an initial velocity of 5√3 to their bullets. If the 2nd bullet of A hits the 1st bullet of B in mid air, what's the reload time?

1. 👍 0
2. 👎 0
3. 👁 86
1. You have to figure where they hit. They ave the same horizontal distance, and same vertical final height at times separated by reload time.

Vertical poistion:
A) h=10-1/2 g (t-R)^2 where t is time in air of B, and R is reloadt time.
B) h=10-5sqrt3sin60*t
That t puts them at the same vertical height. So you have three unknowns, vertical height, t, and R. You have two equa;tions.
Now considerhorizontal distance.
A) d=5sqrt3*(t-R)
B) d=5sqrt3*cos60*t
set these two eqaul to get
t-R=cos60t or 1.5t=R
Now you have three equations, three unknowns.
Have fun with the algebra. It should work out quickly.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Psycholofgy

Can someone help me with this please! Is this the correct answer I have chosen? I choose C Jake finds guns attractive and desirable, while Arthur feels that guns are threatening and destructive. Their differing feelings toward

asked by Princess on December 12, 2011
2. ### Psycholofgy

Please help! I'm having a very hard time with this question. Can someone please tell me if this the correct answer. I choose A Jake finds guns attractive and desirable, while Arthur feels that guns are threatening and destructive.

asked by Keller on December 12, 2011
3. ### Physics

The battleship Massachusetts' 16" guns could fire a 1-ton shell with an initial velocity of 800m/s. If it fired its guns at an angle of 45 degrees above horizontal, how high and how far would the shells travel? I'm pretty sure

asked by Devynn Austin on October 9, 2014
4. ### English

Here are some more sentences on Defoe's Robinson Crusoe I'd like you to check. Thank you very much in advance. 1) As he hadn’t eaten anything since the day before, he decided to take off his clothes and swim to the ship to look

asked by Franco on September 26, 2010
5. ### i

Guns aren’t necessary. Guns endanger people. They give people confidence which leads them to do dangerous things they wouldn’t otherwise do. They also make violence more lethal than it would be with other weapons. True or

asked by christopher on June 12, 2015
1. ### maths

Seven guns all commence firing together at a target but they continue to fire at interval 2,3,5,7 and 12 minutes. After how many hours do all five guns fire at the same time as they did in the beginning? Thanks for helping

asked by LISA on February 11, 2015
2. ### Comm. Arts

Toulmin Model and Campus Gun Control? I'm getting really confused about this. I need to break down an article according to the toulmin model within the next few hours. It's about gun control on campuses. So far I've got: Claim:

asked by BB on March 24, 2008
3. ### English Grammar

Facts and figures underscore the degree to which guns function as an immediate threat to the lives of countless innocent citizens. Shouldn't threat be plural since guns is plural?

asked by Suzi Q on April 24, 2008