physics
posted by ellah .
A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, the net displacement, the direction of the net displacement.

horizontal velocity remains constant throughout the flight. There is no horizontal force or acceleration. So 250 m/s at top and at ground
Now the vertical problem, which is simply falling from 100 meters
100 = 0 + 0 t  4.9 t^2
t = 4.52 seconds to fall
v
down speed at ground = 9.8 t = 44.3 m/s
so speed at ground is 250 horizontal and  44.3 vertical. You do the trig
It moves 100 meters down and 250*4.52 meters horizontal.
again you do the trig
Respond to this Question
Similar Questions

physics
a 100g bullet is fired horizontally into a 14.9kg block of wood resting on a horizontal surface and the bullet becomes embedded in the block. if the muzzle velocity of the bullet is 250 m/s , what is the speed of the bullet immedatly … 
physics
A rifle bullet is fired from the top of a cliff at an angle of 30o below the horizontal. The initial velocity of the bullet is 800 m/s. If the cliff is 80 m high, how far does it travel horizontally? 
Physics
a rifle is fried from the top of a building 220 meters high with an initial velocity of 425 m/s at an angle of 12.0 degrees above the horizontal. a. how long will it take for the bullet to reach the ground? 
physics
A bullet is fired at an initial velocity of 300 m/s from the top of a cliff 150 m high. Find the initial horizontal and vertical components, horizontal and vertical displacement, displacement upon reaching the ground. 
Physics
A 0,1kg bullet is fired horizontally towards blcok A and B, which are hanging from cords. The bullet passes through block A of mass 2kg and becomes embedded in block B of mass 6.4kg. The bullet thus causes A and B to start moving with … 
science
A bullet is fired horizontally with a velocity of 250 m/s from the top of a building 100m high. Find the Horizontal and vertical velocities of the bullet when it reaches the ground, the resultant velocity, the horizontal displacement, … 
PHYYYYYSICS 6
Three marksmen stand at the top of a building. Two of them fire identical bullets out of identical rifles. The bullets leave the rifles with the same initial speed. The last marksman forgot his rifle, so he drops his bullet off the … 
Physics
A bullet is fired vertically upward with an initial velocity of 98m/s from the top of a building 100m high, find a) the maximum height reached above the ground b) the total time before reaching the ground. C) the velocity on landing. 
Physics
A bullet is fired horizontally with a velocity of 40m/m from the top of a building 50m height.How far from the foot of the building will the bullet be assumed to touch the ground? 
Physics
a projectile is fired horizontally outward from the top of a table. the initial height of the bullet above the ground is 1.5 meters and the bullet travels a horizontal distance of 3.0 meters before striking the ground. Calculate the …