Posted by **irna** on Thursday, April 21, 2011 at 9:53am.

a stone is from the top of a tower 300m high and at the same time another stone is projected vertically upward with initial velocity 75m/s. calculate when and where the two stone meet

- physics -
**Henry**, Monday, April 25, 2011 at 11:48am
d1 + d2 = 300m,

0.5gt^2 + (75t + 0.5gt^2) = 300m,

Since g in the 1st term is positive and

g in the 3rd is negative, they cancel

each other and the Eq becomes:

75t = 300,

t = 4 seconds.

d1 = 0.5*9.8*4^2 = 78.4m. below top

of tower = 300 - 78.4 = 222m above

ground.

d2 = 75*4 - 0.5*9.8*4^2,

d2 = 300 - 78.4 = 222m above ground.

Therefore, the 2 stones meet 4s after

release at a distance of 222m above

ground.

## Answer this Question

## Related Questions

- physics - a stone is from the top of a tower 300m high and at the same time ...
- physics - Stone dropped from top of a tower 100m high. At same instant another ...
- physics - Stone dropped from top of a tower 100m high. At same instant another ...
- Physics - A stone is thrown vertically upward from the top of the tower with a ...
- mechanics - A stone is thrown vertically up from the top of the tower 40m high ...
- physics - A stone is dropped from a 75 m high building. when this stone has ...
- physics - A stone is dropped from a 75 m high building. when this stone has ...
- physics - A boy drops a stone-A, down from a cliff 480 meters high, next he ...
- Dynamics - A stone is thrown vertically upward from the top of a 30m high ...
- Dynamics - A stone is thrown vertically upward from the top of a 30m high ...

More Related Questions