- #1

- 81

- 2

You are using an out of date browser. It may not display this or other websites correctly.

You should upgrade or use an alternative browser.

You should upgrade or use an alternative browser.

- Thread starter oreo
- Start date

- #1

- 81

- 2

- #2

CWatters

Science Advisor

Homework Helper

Gold Member

- 10,533

- 2,298

Hint: Write equations for the horizontal and vertical motion. Then realise that the time at which the ball goes through the hoop is the same in both equations. Should give you enough equations and known variables to allow you to solve for the launch velocity. Perhaps start by subtracting 2m from all the heights so that the ball is launched from the ground towards a hoop at height 1.05m high.

- #3

- 81

- 2

I have tried but it gives quadratic equations which make solution even more complicated.

Hint: Write equations for the horizontal and vertical motion. Then realise that the time at which the ball goes through the hoop is the same in both equations. Should give you enough equations and known variables to allow you to solve for the launch velocity. Perhaps start by subtracting 2m from all the heights so that the ball is launched from the ground towards a hoop at height 1.05m high.

- #4

- 35,895

- 6,636

More complicated than what? Than no solution at all?I have tried but it gives quadratic equations which make solution even more complicated.

Please post your working as far as you can get. Since, as CW pointed out, you have to use common time to connect the horizontal and vertical motions, solving a quadratic will be unavoidable.

- #5

CWatters

Science Advisor

Homework Helper

Gold Member

- 10,533

- 2,298

Perhaps use..

http://www.purplemath.com/modules/quadform.htm

- #6

- 81

- 2

I have derived equations for common timeMore complicated than what? Than no solution at all?

Please post your working as far as you can get. Since, as CW pointed out, you have to use common time to connect the horizontal and vertical motions, solving a quadratic will be unavoidable.

I have an attempt in solving it. Please guide me how to carry on further.See the figure

Perhaps use..

http://www.purplemath.com/modules/quadform.htm

- #7

CWatters

Science Advisor

Homework Helper

Gold Member

- 10,533

- 2,298

Can you show us your working to get to the equation in that image.

- #8

- 81

- 2

What should I equate time to? I have equated it equal to " total time - time to reach 10m distance" but it gives equation of degree 4.Can you show us your working to get to the equation in that image.

- #9

- 35,895

- 6,636

Please post your working (sigh). We can't tell what you are doing wrong otherwise.it gives equation of degree 4

Share: