# 'How long will it take a shell fired from a cliff at an initial velocity of 800m/s at an angle 30 deg below the horizontal to reach the ground 150m Read more: On level ground a shell is fired with an initial velocity of 80 m/s at 60 degrees above the horizontal and feels no appreciable air resistance? - Find the horizontal and vertical components of the shell`s velocity.

1
by mgarcia16

2016-01-28T13:50:00+08:00

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ito yung para sa second question mo
Horizontal component = (cos 30 degrees) x 80 = 69.28 m/s
Vertical component = (sin 30 degrees) x 80 = 40 m/s
ito yung sa una.. sorry akala ko kasi nagkamali k type
two pla questions mo

H=H0+ V0(t)+ 1/2 G (t^2)

H0= 150m
V0= -800 sin 30 degrees = -400m/s
G= 9.8 m/s^2
t= time
substitute
H=150-400t- 4.9t^2