posted by .

A long jumper jumps at a 45 degree angle towards the right bank which is 10.0 m away horizontally and 2.5 m vertically below. How long, or short, of the opposite bank will she land?

  • Physics -

    I assume she jumps at 45° above horizontal.
    Is her initial velocity given by the question?

  • Physics -

    No, the initial velocity has to be solved for.

  • Physics -

    Vo = 9.0 m/s
    She lands 0.21 m past the opposite bank

    I'm not sure how to get those numbers, though.

  • Physics -

    How far a long jumper gets obviously depends upon the takeoff speed. Unless you know what that is, you cannot say if she comes up short or not.

  • Physics -

    I just said the takeoff speed is 9.0 m/s.

  • Physics -

    I'm not sure either.

    I have three unknowns (x, t and u =initial velocity), and two equations:

    unless I am missing something.

    In any case, if I substitute u=9 m/s, I get the horizontal distance as 10.27, which is 0.27m past the other bank (and not 0.21).

  • Physics -

    I thought you said that the take-off speed has to be found (unknown).

  • Physics -

    You do have to solve for the take-off speed, but I have the answers. I just don't know the procedure for solving the problem.

  • Physics -

    Neither do I when there are three unknowns and two equations. Sorry.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Physics

    A small boat is crossing a river which flows at 10km.h. The driver of the boat keeps it heading directly (at 90) away from the bank at a speed of 24 km/h relative to the water. The river is 0.5 km wide. I calculated the speed of the …
  2. physics

    A long jumper jumps at a 20 degree angle and attains a maximum altitude of .6 m. a)what is her initial speed?
  3. physics

    A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?
  4. Physics, PLEASE HELP!!

    A long jumper jumps with the initial velocity of 12.0 m/s at an angle of 20 degrees. what is the displacement of x?
  5. physics

    1)A fire hose held near the ground shoots water at a speed of6.5 mps At what angle should the nozzle point in order that the water land 2.5 meters away?
  6. physics

    A baseball is hit with a speed of 27 meters per second at an angle of 45 degrees. It lands on the flat roof of a 13 meter tall building. If the ball was hit when it was 1 meter above the ground, what horizontal distance does it travel …
  7. physics

    I do not understand the answer that was given to me on a post dated Nov. 23. Please help explain my questions that appear at the end of this post. Bart ------------------- Posted by Bart on Wednesday, November 23, 2011 at 6:52am. A …
  8. physics

    A 410-m-wide river has a uniform flow speed of 2.0 m/s through a jungle and toward the east. An explorer wishes to leave a small clearing on the south bank and cross the river in a powerboat that moves at a constant speed of 7.9 m/s …
  9. trigonometry

    A line AB, 125 feet long, is measured along the sraight bank of a river. A point C is on the opposite bank. Angles ABC and BAC are found to be 65° 40' and 54° 30' respectively. How wide is the river?
  10. Physics

    A bank robber, after completing his heist, jumps into his getaway car and drives away from the scene of a crime, down a straight highway at 40 m/s. A police vehicle follows in pursuit, leaving the bank 2 minutes after the robber left. …

More Similar Questions