A projectile is shot horizontally at 23.4 m/s from the roof of a ...

[Sportsfan2111]

A projectile is shot horizontally at 23.4 m/s from the roof of a building 55.0 m tall. (a) Determine the time necessary for the projectile to reach the ground below.
 
  (b) Determine the distance from the base of the building that the projectile lands. (c) Determine the horizontal and vertical components of the velocity just before the projectile reaches the ground.

Question 2

What is the mass density of argon gas at pressure 1.00  105 N/m2 and at temperature 300 K? The mean atomic mass of argon is 39.948u.
 
  A)
 
  1.40 kg/m3
 
  B)
 
  1.00 kg/m3
 
  C)
 
  1.20 kg/m3
 
  D)
 
  1.60 kg/m3
 
  E)
 
  1.80 kg/m3

[dantucker]

Answer to Question 1

(a) 3.35 s
(b) 78.4 m
(c) vhorizontal = 23.4 m/s, vvertical = 32.8 m/s

Answer to Question 2

D