KinematicsHard
Question
An aeroplane is flying at a uniform speed v m/s at a height h from the ground. If the angle subtended at an observation point on the ground by two positions of the aeroplane t second apart is θ, the height h will be :-
Options
A.
B.
C.
D.
Solution
From the figure
= tan 
MB = PM tan
....(i)But AB = vt = 2 (MB)
∴ MB =
from eqn (i)
∴ PM =
Create a free account to view solution
View Solution FreeMore Kinematics Questions
Which of the following velocity-time graphs shows a realistic situation for a body in motion ?...A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 seconds, the next 5 seconds and the...A small block is connected to one end of a massless spring of un-stretched length 4.9 m. The other end ofthe spring (see...Let and be the instantaneous velocity and acceleration respectively of a particle moving in a plane. The rate of change ...Which of the following velocity - time graph shows a realistic situation for a body in motion : -...