Guys please help me into my retrice with solution please thanks!
1.) A body projected upward from the level ground at an angle of 50dig with speed of 40m/s
a. How long will it take to hit the ground?
b. How far from the starting point will it strike?
c. at what angle with the horizontal will strike?

Question

Guys please help me into my retrice with solution please thanks!
1.)	A body projected upward from the level ground at an angle of 50dig with speed of 40m/s 
a. How long will it take to hit the ground?
b. How far from the starting point will it strike?
c. at what angle with the horizontal will strike?

anonymous · Answer

help me! please

anonymous · Answer

Use the displacement formula for the y axis and you will find the time.

anonymous · Answer

$$y_f=y_i+vt+\frac{ at^2 }{ 2 }$$

anonymous · Answer

how? can you show the proper way?

anonymous · Answer

You know everything in that formula except the time.
1 variable, 1 equation.

anonymous · Answer

thats letter a?

anonymous · Answer

yf = final position
yi = initial position
v = initial velocity
a = acceleration

anonymous · Answer

but the main solving?

anonymous · Answer

Solving is just algebra, do you need help with that too?

anonymous · Answer

yes because its confusing to understand

anonymous · Answer

Start by plugging in the data you have in the formula.

anonymous · Answer

I'll correct you on the way.

anonymous · Answer

dude i dont know where im going start? sorry men

anonymous · Answer

$$y_f=y_i+v_i t + \frac{ at^2 }{ 2 }$$
Let's start with what's yf and yi
What do you think is the starting position and end position on the y axis?

anonymous · Answer

|dw:1412161837197:dw|