Recent content by IDKPhysics101

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    Cannon at rest shot on frozen pond. what is cannon balls v after cannon recoil?

    253.5*6.9=1749.15/6.8=-257.22 i think the answer should be negative or so I am told?
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    Center of mass: 2 objects in triangle system

    Xcm=(2m*0)+(3m*1.55)+(m*1.55) ----------------------------- (2m+3m+m)
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    Elastic collision, 2 objects collide.

    i think i screwed up getting m2 by itself but i had plugged my numbers in as... -5.3=((2*9.4)/(9.4+m2))*(15.3)-0
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    Center of mass: 2 objects in triangle system

    yeah, i realized that i was making 4.21 the origin or the point of reference or something to get the center of mass for just the system no regarding the origin and just adding it in at the end
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    Center of mass: 2 objects in triangle system

    xcm= (2m*4.21) + (3m*5.76) +(m*7.31) --------------------------------- 2m + 3m + m xcm=5.5?
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    Inelastic collision, two cars approach each other at intersection.

    my teacher has not clearly presented the X & Y compents in this type of probelm. would i use something along the lines of that problem but have cos and sin in there somewhere?
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    Avg force on projectile shot from cannon?

    F=687.96n
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    Center of mass: 2 objects in triangle system

    well my total answer was 5.24, is that correct?
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    Elastic collision, 2 objects collide.

    i used the equation v2=(2m1/m1+m2)vo1 - (m1-m2/m1+m2)vo2
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    Inelastic collision, two cars approach each other at intersection.

    m1vo1 + m2vo2 = (m1 + m2)V (928.4)(-21.4) + (951.2)(39.5)=(928.4 + 951.2)V 17704.64=1879.6V V=9.41
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    Center of mass: mass's on a right triangle system

    A system consists of three particles located at the corners of a right triangle as shown below. Mass 1 is 7.0 kg, mass 2 is 6.4 kg, and mass 3 is 9.9 kg. If the distances a equals 15.8 m and b equals 2.0 m, then what is the center of mass (in m) in the vertical direction? Y center of...
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    Center of mass: 2 objects in triangle system

    Three objects of different masses are located at the corners of the triangle shown in the picture. If distance a equals 4.21 m, b equals 1.55 m, and c equals 11.93 m, then what is the center of the mass (in m) of the system in the horizontal with respect to the origin? X center of...
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    Calculating Distance Traveled for Two Skaters

    Two skaters of mass 9.2 kg and mass 3.0 kg stand 8.7 m apart, each holding the end of a rope stretched between them. If each skater pulls himself along the rope until they both meet how far (in m) has the person with the mass of 9.2 kg travel before stopping. Assume that friction is...
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    Elastic collision, 2 objects collide.

    Object 1 has a mass of 9.4 kg and is moving eastward with a velocity of 15.3 m/s. It collides with a stationary object. After the collision object 1 recoils with a velocity of -5.3 m/s What is the mass (in kg) of object 2? m2=35.9kg? I don't have time to type my work right now. But will...
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    Inelastic collision, two cars approach each other at intersection.

    Two cars approach each other at an intersection. One car has a mass of 928.4 kg and is traveling in the negative y direction with a velocity of 21.4 m/s. The second car has a mass of 951.2 kg and is traveling in the positive x direction with a velocity of 39.5 m/s. If the collision is totally...