...Beauty, cleaning, DIY tips and more - free to join!
   Login   Contact us   Site map   Puzzle Club   Ask a question    Newsletter

Equations of Motion/ Projectile Problems ?

To kick a goal in rugby you must kick the ball over the crossbar of the goal posts (height 3m) between the two uprights. Evans attempts a kick from a distance of 35m. Initial Velocity is 20ms^-1 at 30 degrees to the horizontal. Ball aimed between uprights and no spin applied. i)How long does it take the ball to reach the goal posts? ii)Does it go over the crossbar? Later in game, Evans takes a nother kick from the same position and hits the crossbar iii) Given initial velocity was also 30 degrees to horizontal find initial speed Use g=10 ms^-2. A firework is buried so that its top is at ground level and it projects sparks all at a speed of 8 ms^-1 i) Calculate the height reached by a spark projected vertically and explain why no spark can reach a greater height ii) For a spark projected at 30 degrees horizontal over horizontal ground, show that its height in metres t seconds after projection is 4t-5t^2 and hence calculate the distance it lands from the firework. iii) For what angle of projection will a spark reach a maximum height of 2m ?
Question asked by: moesizlak

Asked on: 06 Mar 2011

You probably need some sort of maths homework help website to have the best chance of getting such a detailed answer responded to.

However there is an outside chance someone will answer this in the comments section but in general this sort of question doesn't really have a good chance of getting answered.

By: knowitall
Replied at: 20 Mar 2011
Rate Answer
Comment or provide your answer to this question
No comments have been added to this question "Equations of Motion/ Projectile Problems ?".
Ask a New Question

Find out more about Maths

Maths Questions and Answers

maths school questions Questions and Answers

Next question: Sets

Become a Member! It's Free >>>

Share on Facebook: On Twitter: TwitterTweet this!

Question Keywords

problems  projectile  motion  equations  

More Questions:

Abandon Rate
Index Number
Square Number Between 90 And 199
I Don't Understand Math - How Can I Get Better?
The Angles Of A Quadrilateral