Recent content by jonnyboy261

  1. J

    Solving a Long Jump Problem: Find Takeoff Speed & Increase Jump Distance

    ok so i plugged 3.9 m and 0m/s into the displacement equation so it makes t=.892s and then i found out Vi for vertical is 8.74 m/s then i used SOH to find the hyponuse to be equal to 17.48 by dividing 8.74 by sin30 is this the right answer?
  2. J

    Solving a Long Jump Problem: Find Takeoff Speed & Increase Jump Distance

    i know to do that.. but i still don't get how u can use the equations when u only have the horizontal displacement of 7.80 m ? how do i use the 30 degree angle to find anything?
  3. J

    Physics Problem: Can a Biker Make a 45m Gap Jump at 20m/s and 30 Degrees?

    this is easy they give u the angle and initial velocity so u can find out initial velocities for both vertical and horizontal components by multiplying 20*cos30 and 20*sin 30 then u can use an equation to find the time and then use another equation to get the displacement simple stuff really...
  4. J

    Solving a Long Jump Problem: Find Takeoff Speed & Increase Jump Distance

    hey guys imm new here i got a question in my book i can't figure out it says: an athlete executing a long jump leaves the ground at a 30 degree angle and travels 7.80m (a) what was the takeoff speed? (b) if this speed were increased just 5.0 % how much longer would the jump be? anyone...
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