A ball was thrown from height H and the ball hit the floor with velocity #10(hati-hatj)# after 1.5 sec of its projection. find initial velocity of ball?
2 Answers
Given that ball hit the floor with velocity
The horizontal component of the velocity of projection remains unaltered during the flight of the projectile.
If we consider that the vertical component of velocity of projection is
Applying equation of kinematics for the change in vertical component of velocity during time of flight
So initial velocity of the ball
Its magnitude
Direction of projection
Explanation:
The parametric movement equations are:
and the velocities
After
or
then the initial velocity is