- #1
mohlam12
- 154
- 0
hello, please i need help in a problem that I don't know how to do. it s kinda complicated but yeah, just try !
here is the scene...you are on the moon (gravity = 1.624 m/ss). you have won the "chance of a lifetime to shoot a teacher with high powered dart gun" contest. you know that the high poered darts are air friction resistant (not slowed down horizontally by air) you have determined the muzzle velocity of the gun to be _____ m/sec since you found that if the gun is shot vertically on earth, the dart has 5.3 second hang time. Now back to the moon, you are standing 15 away from the target whose nose at 1.85 meters high makes an excellent target to sight on, since it is the same height as the gun. The gun is aimed horizontally! your only requirement is to determine within 5cm how far below the horizontal line of sight will you hit, if it makes it there at all.
The dart will hit __________m below the line of sight or ___________m in front of the teacher.
Please please please, i tried over and over again to get the problem and to solve it but i coulsnt, I am an exchange student and i already had difficulties to get the problem. Please try to give me hints!
I already got that the vertival muzzle velocity on Earth is 25.97 m/s
Vi= 0 - 9.8 * (5.3/2)
Vi=25.97
and on Earth the dart will go 34.41 m up (Vi.t+.5at^2 --> 25.97*(5.3/2)+.5*9.8*(5.3/2)^2 = 34.441 ) but i still don't know how to determine the muzzle velocity on the moon if we have the muzzle velocity on earth.
thanks,
here is the scene...you are on the moon (gravity = 1.624 m/ss). you have won the "chance of a lifetime to shoot a teacher with high powered dart gun" contest. you know that the high poered darts are air friction resistant (not slowed down horizontally by air) you have determined the muzzle velocity of the gun to be _____ m/sec since you found that if the gun is shot vertically on earth, the dart has 5.3 second hang time. Now back to the moon, you are standing 15 away from the target whose nose at 1.85 meters high makes an excellent target to sight on, since it is the same height as the gun. The gun is aimed horizontally! your only requirement is to determine within 5cm how far below the horizontal line of sight will you hit, if it makes it there at all.
The dart will hit __________m below the line of sight or ___________m in front of the teacher.
Please please please, i tried over and over again to get the problem and to solve it but i coulsnt, I am an exchange student and i already had difficulties to get the problem. Please try to give me hints!
I already got that the vertival muzzle velocity on Earth is 25.97 m/s
Vi= 0 - 9.8 * (5.3/2)
Vi=25.97
and on Earth the dart will go 34.41 m up (Vi.t+.5at^2 --> 25.97*(5.3/2)+.5*9.8*(5.3/2)^2 = 34.441 ) but i still don't know how to determine the muzzle velocity on the moon if we have the muzzle velocity on earth.
thanks,
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