top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

A helium balloon leaves the ground at a point A and rises vertically............what is the speed of the balloon in m/s?

0 votes
779 views

A helium balloon leaves the ground at a point A and rises vertically at uniform speed.
At the end of 5 minutes, Rohan finds the angular elevation of the balloon as 30 degree.
If the point at which Rohan is standing is 550 m away from point A, what is the speed of the balloon in m/s?

posted Oct 4, 2019 by Samardeep Acharya

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

1.06 m/sec

E- elevation
D- distance = 550 m
Time- 5 min
S- speed= ?

E/D=tan(30 deg) --> E=D*tan(30 deg)= 550m * 0.577=317.54 m
S=317.54 m/5 min= 317.54 m/ 300 sec= 1.06 m/sec

answer Oct 5, 2019 by Hanifa Mammadov



Similar Puzzles
+1 vote
In a car race, car A takes 4 seconds less than car B at the finish and passes the............Find the velocity v in m/s.

In a car race, car A takes 4 seconds less than car B at the finish and passes the finishing point with a velocity v more than the car B.
Assuming that the cars start from rest and travel with constant accelerations a1 = 4 ms^-2 and a2 = 1 ms^-2 respectively.
Find the velocity v in m/s.

0 votes
In the given image if pipe is completely filled with water, then at which point is the speed of the water flow greater?

A tap is opened to fill a bucket, and water flows from the tank through a pipe. Now, as shown in the diagram, consider two points A and B on the vertical part of the pipe which has a uniform cross section.

enter image description here

If the pipe is completely filled with water and the water flows steadily, then at which point is the speed of the water flow greater?

0 votes
A stone is dropped into a well of depth 67.6 m. The splash of water is heard..........Find the velocity of sound in m/s?

A stone is dropped into a well of depth 67.6 m.
The splash of water is heard after 3.91 seconds.
Find the velocity of sound in m/s?

0 votes
Calculate the maximum velocity of the particle in m/s?

A particle moves in a straight line such that the displacement x at any time 't' is given by
x = 6t^2 - t^3 - 3t - 4.
x is in meter and t is in seconds.
Calculate the maximum velocity of the particle in m/s?

...