Better Students Ask More Questions.
Q. A balloon is moving up with a speed 60 m/s.When the balloon is at a height 225 m...
Q. A balloon is moving up with a speed 60 m/s.When the balloon is at a height 225 m above the ground a stone is thrown horizontally with a speed 40 m/s with respect to balloon.
a) The horizontal displacement of the stone when it is at the top of its trajectory.
1 Answer | add yours
At the moment of throwing, the stone will possess two components of velocity,
1. Upward, 60m/s
2. Horizontal, 40 m/s
At the top of its trajectory, the vertical component of velocity is zero. Applying laws of motion for this component,
t = 60/g =60/9.81=6.1155 s
This is the time to reach the top of its trajectory.
a) Horizontal range covered by the stone in this time = horizontal velocity * time
Therefore, the horizontal displacement of the stone when it is at the top of its trajectory is 244.6 m.
Posted by llltkl on August 3, 2013 at 4:38 PM (Answer #1)
Join to answer this question
Join a community of thousands of dedicated teachers and students.