Parabolic Motion, *throw a ball with velocity at angle 45 6.2m above ground

[Tommy22]

Jimmy tosses a ball with a velocity of 15m/s at 45degrees to the horizontal from a hill
6.2metres above ground.
Find:
-time of flight
-horizontal range
-maximum height
-speed of the ball when its 3m below the hill
-angle at which ball hits ground

Thx a lot, ANY help would be appreciated.

 

[mysqlpress]

u should be able to develop a set of equations with your maths..
Umm... making use of uniform accelerated equations such as
v=u+at
s=(u+v)t/2
v^2-u^2 =2as
s=ut+1/2at^2

 

[Charlie_russo]

you could find range with R=1/16(Initial velocity)2sin(angle)cos(angle)

 

[rock.freak667]

Jimmy tosses a ball with a velocity of 15m/s at 45degrees to the horizontal from a hill

Split that into vertical and horizontal components(this is always constant).
Use the kinematics equations and consider vertical and horizontal motion.