A balll is projected with initial speed of 40 m/s making an angle of 30 degrees with the horizontal. Find

(1) Vertical displacement

(2) Horizontal displacement

(3) velocity and angle it is making with horizontal at t=1 and t=3 sec.

Dear student,

The horizontal and vertical componetns of veloicty are


and

Therefore vertical displacement in time 't’=
Horizontal displacement in time ‘t’=

Horizontal component of velocity after time ‘t’=(since no force acts in the horizontal direction)

Vertical component of velocity=

Hence angle velocity forms with horizontal after time ‘t’=