Unformatted text preview: hows us that the x and y portions
Fig
of motion are independent of each other.
of The ‘x’ motion is uniform motion The ‘y’ motion is free fall Horizontal Projectiles
Horizontal Sample Problem 1
– An arrow is shot from a height of 20.0 m with an
An
initial horizontal velocity of 18.0 m/s. How far in
the horizontal direction will the arrow travel
before it hits the ground?
before Solution
– G/R:
G/R: v1x = 18.0 m/s ay = 9.8 m/s² [down] ∆dy = 20.0 m [down]
20.0 ∆dx = ?? – A: ∆dy = v1y ∆ t + ½ a ∆ t²
1y
A: But v1y = 0
– So, ∆dy = v1y ∆ t + ½ a ∆ t²
1y
So, Solution, Con...
View
Full Document
 '14
 Acceleration, arrow, Horizontal Projectiles

Click to edit the document details