Recent content by IBdoomed

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    Conservation of Energy (answer in Netwons)

    I surrender.
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    Conservation of Energy (answer in Netwons)

    oh sorry. well I'm pretty lost then... can you help me any more than this?
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    Conservation of Energy (answer in Netwons)

    and work= power/time right? so how do i solve this if i don't know how long she was moving?
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    Conservation of Energy (answer in Netwons)

    I do not! could you please explain?
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    Conservation of Energy (answer in Netwons)

    Pam has a mass of 47.1 kg and she is at rest on smooth, level, frictionless ice. Pam straps on a rocket pack. The rocket supplies a constant force for 15.3 m and Pam acquires a speed of 59.2 m/s. What is the magnitude of the force? Answer in units of N The acceleration of gravity is...
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    What Is the Magnitude of the Impulse Delivered to the Football?

    A(n) 0.445 kg football is thrown with a speed of 15.1 m/s. A stationary receiver catches the ball and brings it to rest in 0.012 s. What is the magnitude of the impulse de- livered to the ball? Answer in units of kg · m/s f=m*a Δp=m*Δv i used f= ma since a= Δv/t i got F=...
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    Angular Physics: Calculate Arrow Height with Velocity & Gravity

    thanks! i got it right :D
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    Angular Physics: Calculate Arrow Height with Velocity & Gravity

    scratch that. i caught my own mistake. i meant to plug in 29.96 m/s for u. and the answer i get is 91.6 meteres!
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    Angular Physics: Calculate Arrow Height with Velocity & Gravity

    OH i think i got it now... okay so i used 55*sin(33) to find the y component of the velocity. then used the equation v^2= u^2+2as v= 0 u= 55 m/s a= -9.8 m/s^2 and using this got a height of 154.34 meters. Can you tell me if this is correct?
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    Angular Physics: Calculate Arrow Height with Velocity & Gravity

    We just started this unit and I'm lost... An arrow is shot at 33◦ angle with the horizontal. It has a velocity of 55 m/s. The acceleration of gravity is 9.8 ms^-2 How high will the arrow go? Answer in units of m I know that S= 1/2 at^2+ut and all the rules of the basic trig...
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    Why do we use Newtons of force over trig functions?

    The problem is as follows: A mass is held by two cables attached to a wall and ceiling. The mass M is 5 kg and the angle between the string and the vertical is θ= 25° a) Determine the tension in the cable attached to the ceiling. I know that the answer is 55 N (because she posted the...
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    Scale Reading of Normal Force: Due by Midnight

    much thanks! mission accomplished
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    Scale Reading of Normal Force: Due by Midnight

    Remember that a scale records the value of the normal force, not a person’s actual weight. Draw a FBD. Rotate your coordinate system. A 61 kg student weighs himself by standing on a scale mounted on a skateboard that is rolling down an incline, as shown. Assume there is no friction so...
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    Force Needed to Stop a Flying Bullet

    nevermind. i was not converting my answer into kN... thank you so much!
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    Force Needed to Stop a Flying Bullet

    i was trying to use v^2= u^2+2as but the answer i am getting is wrong... is there a different formula you suggest?