physics homework... Need help badly |
 Dec 5 2005, 01:52 AM
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 Pimp Status  Group: Member Posts: 640 Joined: Jan 2004 Member No: 1,200  |
hey guys,
This physics homework is killing me and I need some help trying to do it Equations of kinematics in two demensions and projetile motion 1) A volleyball is spiked so that it has an ititioal velocity of 15 meters per second (m/s) directed downwardat an angle of 55 degrees below the horizontal. What is the horizontal component of the balls velocity? 2)A rocket is fired at a speed of 75 meters per seond from ground level at an angle of 60 degrees above the horizontal. The rocket is fired toward an 11. 0 meter hight wall which is located 27 meters away. By how much does the rocket clear the top of the wall Nonequilibrium applications of newtons second law 1. A 1380 Kg car is moving due east with an initial speed of 27 m/s. After 8.00 seconds the car has slowed down to 17.0 m/s. Find the magnitudeand direction of the net forcethat produces the deceleration any help what so ever would be great |
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Dec 5 2005, 02:46 AM
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#2
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Pimp Status Group: Member Posts: 640 Joined: Jan 2004 Member No: 1,200 |
well stephinika i thought about that too. I figured that since the angle opposite to the 55 is 35 and what i did was took cos(35)*15 should equal the length of the mystery angle. I got 12.3... Does that sound resaonable?
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Posts in this topic
eboarder2020 physics homework... Need help badly Dec 5 2005, 01:52 AM
stephinika 1) draw your triangle and use trig to solve.
2)... Dec 5 2005, 02:25 AM wind&fire [edit]acutally the persons diagram is wrong let me... Dec 5 2005, 02:58 AM eboarder2020 hey guys i figured out the 1st and 3rd one and tha... Dec 5 2005, 08:17 AM
mzkandi ^ OK, I'm assuming you need no further help, i... Dec 6 2005, 02:18 AM |
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