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Equations of Kinematics in two Dimensions & Projectile Velocity

A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 13 m/s at an angle of 59° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height between the two climbers?

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  • 3213sm Feb 18, 2009

    A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 22 m/s at an angle of 52° above the horizontal. At the instant when the kit is caught, it is traveling horizontally, so its vertical speed is zero. What is the vertical height between the two climbers?

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This is for educational use only-hacking any software/hardware is by definition illegal. so long as you are aware of this. Hello there, google these words so that you are pointed in the right direction-----dvd+jon+iphone

Posted on Nov 27, 2008

  • Edward easley
    Edward easley Nov 27, 2008

    sorry about that, wrong question

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If two balls of different masses are thrown vertically upwards with same initial speed then which one rises to a greater height?


This the problem of a projectile motion.
Assume the positive direction of the vertical axis is upward.
Let y_0 be the initial height, which we set=0.
Let v_0 be the initial velocity, a the acceleration, t the time, y the position at instant t, v the vertical velocity.
a=-g
v=v_0-gt
y=v_0*t-(1/2)*(g*t^2)
At what time is the highest point reached?
At the culmination point (highest point) the speed passes through the value 0. This happens at the time t_c given by
v_0-g*t_c=0 or t_c=v_0/g
Substitute this value in the equation for the position
y_c=v_0*t_c-(1/2)g*(t_c)^2
this gives y_c=(1/2*g)*(v_0)^2
As you can see the mass does not appear anywhere in this problem. Both masses will reach the same height.

Nov 10, 2013 | Microsoft Windows XP Professional

1 Answer

What is the formula of Panofsky & Brier for wind velocity in meters per second and knots?


Here's the link: http://oic-nwreviewer.blogspot.com/2013/12/how-to-solve-wind-velocity-using.html

Jun 19, 2011 | Operating Systems

1 Answer

Pixels are too large when videos and photos are copied from a 1.3 megapixel cellphone to a computer.


There really isn't much you can do.
If you view the picture in it's actual dimensions (which will be really small) it will probably look fine, but if you blow it up or try to view it full screen, you are going to see the JPEG blocks quite easily.
Go through your camera manual though, you might have the camera set lower that 1.3 megapixels, and increasing may help dramatically.

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Use augmented matrices to solve the following 2x2 systems of equations. -5x+7y=9 x+10y=21


This is not an "Operating Systems" question!

(-5 7) (x y) = (9)
(1 10) (x y) = (21)

(-5 7) (x y) = (9)
(5 50) (x y) = (105)

(0 57) (x y) = (114)

(1) (y) = (2)

(1) (x) = (1)

QED

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1 Answer

How do you solve equations on both sides with a larger x on the first side


www.wolframalpha.com

Type your equation into this computational engine.

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A rock climber throws a small first aid kit to another climber who is higher up the mountain. The initial velocity of the kit is 18 m/s at an angle of 74° above the horizontal. At the instant when the...


Depends on how long it has been travelling. If it is horizontal when it's been caught then ot must have reached zero velocity. No matter the angle gravity works at 1m/s/s. Do the math.

Sep 18, 2009 | NorStar Operational Software Category E...

2 Answers

Career in robotics


At my university, they offer a graduate program in robotic engineering. Here are the course requirements:

=================

RBE 1001. Introduction to Robotics (Formerly ES 2201).
Cat. I
Multidisciplinary introduction to robotics, involving concepts from the fields of electrical engineering, mechanical engineering and computer science. Topics
covered include sensor performance and integration, electric and pneumatic actuators, power transmission, materials and static force analysis, controls and programmable embedded computer systems, system integration and robotic applications. Laboratory sessions consist of hands-on exercises and team projects where students design and build mobile robots. Undergraduate credit may not be earned for both this course and for ES 2201.
Recommended background: mechanics (PH 1110/PH 1111).
Suggested background: electricity and magnetism (PH 1120/PH 1121), may be taken concurrently.


=================


RBE 2001. Unified Robotics I.
Cat. I
First of a four-course sequence introducing foundational theory and practice of robotics engineering from the fields of computer science, electrical engineering and mechanical engineering. The focus of this course is the effective conversion of electrical power to mechanical power, and power transmission for purposes of locomotion, and of payload manipulation and delivery. Concepts of energy, power and kinematics will be applied. Concepts from statics such as force, moments and friction will be applied to determine power system requirements and structural requirements. Simple dynamics relating to inertia and the equations of motion of rigid bodies will be considered. Power control and modulation methods will be introduced through software control of existing embedded processors and power electronics. The necessary programming concepts and interaction with simulators and Integrated Development Environments will be introduced. Laboratory sessions consist of hands-on exercises and team projects where students design and build robots and related sub-systems.
Recommended background: ES 2201/RBE 1001, ES 2501 (can be taken concurrently), ECE 2022.


=================


RBE 2002. Unified Robotics II.
Cat. I
Second of a four-course sequence introducing foundational theory and practice of robotics engineering from the fields of computer science, electrical engineering and mechanical engineering. The focus of this course is interaction with the environment through sensors, feedback and decision processes. Concepts of stress and strain as related to sensing of force, and principles of operation and interface methods for electronic transducers of strain, light, proximity and angle will be presented. Basic feedback mechanisms for mechanical systems will be implemented via electronic circuits and software mechanisms. The necessary software concepts will be introduced for modular design and implementation of decision algorithms and finite state machines. Laboratory sessions consist of hands-on exercises and team projects where students design and build robots and related sub-systems.
Recommended background: RBE 2001, CS 1101 or CS 1102


=================


RBE 3001. Unified Robotics III.

Cat. I
Third of a four-course sequence introducing foundational theory and practice of robotics engineering from the fields of computer science, electrical engineering and mechanical engineering. The focus of this course is actuator design, embedded computing and complex response processes. Concepts of dynamic response as relates to vibration and motion planning will be presented. The principles of operation and interface methods various actuators will be discussed, including pneumatic, magnetic, piezoelectric, linear, stepper, etc. Complex feedback mechanisms will be implemented using software executing in an embedded system. The necessary concepts for real-time processor programming, re-entrant code and interrupt signaling will be introduced. Laboratory sessions will culminate in the construction of a multi-module robotic system that exemplifies methods introduced during this course.
Recommended background: RBE 2002, ECE 2801, CS 2223, MA 2051
This course will be offered starting in 2008-09.

=================

RBE 3002. Unified Robotics IV.
Cat. I

Fourth of a four-course sequence introducing foundational theory and practice of robotics engineering from the fields of computer science, electrical engineering and mechanical engineering. The focus of this course is navigation, position estimation and communications. Concepts of dead reckoning, landmark updates, inertial sensors, vision and radio location will be explored. Control systems as applied to navigation will be presented. Communication, remote control and remote sensing for mobile robots and tele-robotic systems will be introduced. Wireless communications including wireless networks and typical local and wide area networking protocols will be discussed. Considerations will be discussed regarding operation in difficult environments such as underwater, aerospace, hazardous, etc. Laboratory sessions will be directed towards the solution of an open-ended problem over the course of the entire term.
Recommended background: RBE 3001.
Suggested background: ES 3011
This course will be offered starting in 2008-09.

=================


RBE/ME 4322. Modeling and Analysis of Mechatronic Systems.
Cat. I
This course introduces students to the modeling and analysis of mechatronic systems. Creation of dynamic models and analysis of model response using the bond graph modeling language are emphasized. Lecture topics include energy storage and dissipation elements, transducers, transformers, formulation of equations for dynamic systems, time response of linear systems, and system control through open and closed feedback loops. Computers are used extensively for system modeling, analysis, and control. Hands-on projects will include the reverse engineering and modeling of various physical systems. Physical models may sometimes also be built and tested.
Recommended background: mathematics (MA 2051, MA 2071), fluids (ES 3004), thermodynamics (ES 3001), mechanics (ES 2501, ES 2503)


=================


RBE/ME 4815. Industrial Robotics.

Cat. I
This course introduces students to robotics within manufacturing systems. Topics include: classification of robots, robot kinematics, motion generation and transmission, end effectors, motion accuracy, sensors, robot control and automation. This course is a combination of lecture, laboratory and project work, and utilizes industrial robots. Through the laboratory work, students will become familiar with robotic programming (using a robotic programming language VAL II) and the robotic teaching mode. The experimental component of the laboratory exercise measures the motion and positioning capabilities of robots as a function of several robotic variables and levels, and it includes the use of experimental design techniques and analysis of variance.
Recommended background: manufacturing (ME 1800), kinematics (ME 3310), control (ES 3011), and computer programming.

=================

Dec 16, 2008 | Microsoft Windows Vista Ultimate Edition

1 Answer

Physics-kinematics


Nice try! Find an upper-class student to give you one-on-one tutoring with your homework assignment.

P.S. This is a "trick" question -- when a human-body strikes the hard ground, it will lose (not "loose") 100% of its velocity.

When a human-body contacts something fluid, such as water, then it's possible that it will lose 25% or 50% or 75% of its velocity, and continue to dive _below_ the surface of the water.

Sep 28, 2008 | Operating Systems

1 Answer

Projectile motion


surely the ball was having a ball with the table.. a 69 position could help taking the average time for it to come. and **** off on the floor with a velocity determined by the medium viscosity which ends upto a final value discovered by Indians --------- '0'

Apr 16, 2008 | Operating Systems

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