3- A ball was launched with V=30m/s and 45 degrees to horizon from the ground. It bounces at point A on the ground and losses its vertical speed vi=rt(3)vf. The ball flies off and bounces off point B.
a) What is the distance from point A to point B?
b) To maximize the distance from A to B, what should be the initial angle?

c) What is the ratio of the displacement from origin to point A and from A to B?
d) How far the ball traveled from origin to point A and from A to B?

Question

3- A ball was launched with  V=30m/s and  45 degrees to horizon from the ground. It bounces at point A on the ground and losses its vertical speed vi=rt(3)vf.  The ball flies off and bounces off point B. 
a)	What is the distance from point A to point B?
b)	To maximize the distance from A to B, what should be  the initial angle?

c)	What is the ratio of the displacement from origin to point A and from A to B?
d)	How far the ball traveled from origin to point A and from A to B?

anonymous · Answer

found (b) to be 60 degrees

nowhereman · Answer

What is meant by 'losses its vertical speed'. If it has no more vertical speed it should just slide along the ground...

anonymous · Answer

the loss is only the rt3

nowhereman · Answer

What is that vi=rt(3)vf supposed to mean anyway?

anonymous · Answer

vi is the initial velocity and vf is the final velocity

nowhereman · Answer

and rt(3) is just an arbitrary fraction of 1?

anonymous · Answer

yeah, what is rt(3)?

anonymous · Answer

the loss in the vertical velocity after it bounces

anonymous · Answer

okay you know that$$v _{i} = 30. $$
you know that it was launched at 45 degrees. find out the horizontal and vertical components of  Vi

anonymous · Answer

velocity vector <15sqrt(2), 15sqrt2 - 10t> position vector < t15sqrt(2), t15sqrt(2) - 5t^2>

anonymous · Answer

what is the 15sqrt2 - 10t in the velocity vector supposed to mean?

anonymous · Answer

are you approximating g to 10?