Posted by **ellah** on Monday, January 9, 2012 at 5:20pm.

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.

- physics -
**Damon**, Monday, January 9, 2012 at 5:54pm
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

## Answer This Question

## Related Questions

- science - A bullet is fired horizontally with a velocity of 250 m/s from the top...
- Physics - a rifle is fried from the top of a building 220 meters high with an ...
- Physics - A bullet is fired horizontally with a velocity of 40m/m from the top ...
- Physics - a projectile is fired horizontally outward from the top of a table. ...
- PHYYYYYSICS 6 - Three marksmen stand at the top of a building. Two of them fire ...
- Physics - A bullet is fired vertically upward with an initial velocity of 98m/s ...
- PHY131 - a bullet is fired from a gun that is 2.0 meters above flat ground. the...
- PHY131 - a bullet is fired from a gun that is 2.0 meters above flat ground. the ...
- Physics - A 0,1kg bullet is fired horizontally towards blcok A and B, which are ...
- physics - a 100-g bullet is fired horizontally into a 14.9kg block of wood ...

More Related Questions