KinematicsHard
Question
At the same instant, two boys throw balls A and B from the window with speeds υ0 and kυ0 respectively, where k is constant. They collide in air at time t. Which of the following options is/are correct.
Options
A.k = 
B.k = 
C.t = 
D.t = 
Solution
d = v0 cosθ2 t = (kv0 cos θ1) t
cosθ2 = k cosθ1
motion of A w.r.t. B in y direction
(h = Vr t) here Vr = (kv0 sinθ1 + v0 sinθ2)
t =
Create a free account to view solution
View Solution FreeMore Kinematics Questions
Let and be the instantaneous velocity and acceleration respectively of a particle moving in a plane. The rate of change ...Which of the following statement are true for a moving body ?...A projectile is thrown with velocity v making an angle θ with the horizontal. It just crosses the top of two poles,...The displacement of a particle moving in a straight line depends on time (t) as : x = αt3 + βt2 + γt + &#...A balloon is rising upwards at a velocity of 10m/s. When it is at a height of 45 m from the ground, a parachute bails ou...