Homework Help: physics

Posted by layan on Thursday, November 26, 2009 at 7:16pm.

A stone is dropped into a river from a bridge 41.7 m above the water. Another stone is thrown vertically down 1.87 s after the first is dropped. Both stones strike the water at the same time. What is the initial speed of the second stone?

physics - MathMate, Thursday, November 26, 2009 at 11:14pm
S=ut-(1/2)gt²
S=41.7 m, u=0, g=9.8 m/s²
Solve for t.
Now
S=v0(t-1.87) - (1/2)g(t-1.87)²
Solve for v0.
physics - Anonymous, Friday, February 10, 2012 at 1:13pm
4
physics - Anonymous, Friday, February 10, 2012 at 1:19pm
4

Answer this Question

Related Questions

physics - A stone is dropped into a river from a bridge 43.3 m above the water. ...
12th grade Physics - A stone is dropped in water from a bridge 44 cm above the ...
physics - A stone thrown off a bridge 20 m above a river has an initial velocity...
physics - A suspension bridge is 66.0 m above the level base of a gorge. A stone...
science - A stone is dropped into a river from a bridge 43.9 m above the water...
physic - A girl throws a stone from a bridge. Consider the following ways she ...
math - You are standing on a bridge over a creek, holding a stone 20 feet above ...
physics - A smooth stone is dropped from a bridge strikes the water after ...
physics - A smooth stone is dropped from a bridge strikes the water after ...
Physics - a stone is dropped from a 75m building. when a stone has dropped 15m, ...

For Further Reading

First Name:
School Subject:
Answer: