Question

An object is projected at an angle of elevation of 45 degrees with a velocity of 100 m/s. Calculate its
(i) range
(ii) time of flight

Answer 1

Range means displacement covered in horizontally.
Range=u^2sin2@/g
=(100)^2sin (2 x 45)/10=1000m

time of flight mean total time take by to covered projectile trajectory.

time of flight=2usin@/g
=2 (100) sin45/10=10root2 sec