How can Eldar toss an apple to Rahwa at the top of a steep hill?

  • Thread starter Thread starter camherokid
  • Start date Start date
  • Tags Tags
    Velocity
AI Thread Summary
Eldar is attempting to toss an apple to Rahwa, who is positioned 2.00m horizontally and 6.00m vertically above him. To solve this physics problem, it's essential to determine the initial velocity and angle required for the apple to reach Rahwa while traveling horizontally upon arrival. The discussion emphasizes the need for relevant equations and a systematic approach to reverse-engineering the problem from given distances to find velocity and angle. Participants suggest calculating vertical and horizontal components of velocity to derive the necessary parameters for the toss. The conversation highlights the importance of showing initial work to facilitate assistance in solving the problem.
camherokid
Messages
6
Reaction score
0
Eldar is standing at the bottom of a steep hill. Rahwa is at the top of the hill which is 2.00m away horizontally and 6.00m higher than where Eldar is standing. Eldar wants to toss an apple up to Rahwa. Assume that the height above Eldar's feet that he throws the apple is the same height above Rahwa's feet that Rahwa catches the apple. At what velocity (magnitude and direction) should Eldar toss the apple so that it is traveling horizontally when Rahwa catches it.
 

Attachments

  • 1.jpg
    1.jpg
    4.5 KB · Views: 372
Physics news on Phys.org
Welcome to PF, Cam. This is obviously a homework question, so it's in the wrong place.
As a former pitcher, and the only person in my league who throws darts like javelines, I can say that the only thing that works for me is to picture a baby seal at the target area and spear the bugger.
 
Indeed this sounds like a homework problem. That does not mean we're not going to help you, just that you have to show us some work first.
So start by posting the relevant equations, and preferably some attempt (don't worry if you think it's stupid; if it is, we'll tell you :smile:)
 
The question ask for velocity and angle...
I know how to find the distance from the start to where it drops if they give me velocity and angle.
But the question in reverse they give the distance and ask for V and angle.
This is my final
-4.9*4/Vox^2 + Voy*2/Vox -6 =o

and Vox = Vo*CosA
Voy = Vo*SinA

How do you find Vo and angle A?
 
Find the vertical velocity... then find the horizontal velocity. Once you know those you can get magnitude and angle.
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
Back
Top