Physics Help Forum velocity question - Jeep jumping river

 Kinematics and Dynamics Kinematics and Dynamics Physics Help Forum

 Feb 11th 2009, 07:30 PM #1 Junior Member   Join Date: Feb 2009 Posts: 8 velocity question - Jeep jumping river a bridge that was 15.0 m long has been washed out by the rain several days ago. how fast must a jeep be going to successfully jump the stream? although the road is level on both sides of the brdige, the road onthe far side is 2.0m lower than the road on the near side.
 Feb 12th 2009, 06:41 AM #2 Member   Join Date: Dec 2008 Posts: 65 The limit case is when the jeep will drop by 2 m during the jump. from d=1/2gt^2 you find the time. t=0.63 s The jeep has to move horizontally by 15m during this time. 15m=v*0.63s So find the speed.
 Feb 12th 2009, 05:18 PM #3 Junior Member   Join Date: Feb 2009 Posts: 8 Thank you so much for your help. I have been trying to figure out the answer to this for awhile now. I know all the formulas and all the given information, its just a matter of what to do with all of it that gets me. I am terrible at physics. Thanks again

 Tags jeep, jumping, question, river, velocity