# A projectile, fired with unknown initial velocity, lands 18.4 s later on the side of a hill, 2740 m away horizontally and 469 m vertically above its starting point. (Ignore any effects due to air resistance.)

(a) What is the vertical component of its initial velocity?

m/s

(b) What is the horizontal component of its initial velocity?

m/s

(c) What was its maximum height above its launch point?

m

(d) As it hit the hill, what speed did it have and what angle did its velocity make with the vertical?

v = m/s

θ = °

## A projectile fired with an know initial velocity lands 20s later on the side of a hill 3000m away horizontally and 450m vertically above its strating point . Find the horizontal and vertical components of its initial velocity

## 27. A projectile, fired with unknown initial velocity, lands 20 s later on the side of a hill, 3000

maway horizontally and 450 m vertically above its starting point. (a) What is the vertical

component of its initial velocity? (b) What is the horizontal component of its initial.

velocity?

## A projectile fired with an know initial velocity lands 20s later on the side of a hill 3000m away horizontally and 450m vertically above its strating point . Find the horizontal and vertical components of its initial velocity

## t=18.4 s later

x=740 m

H=469 m

v*2=u*2+2gh....at hmax , Vy =0

0=u*2+2gh

usina=radical 20(469)=96.8

horizontal componet of velocity

ucosa=x/t=740/18.4=40.21