Question

An object is projected at an angle of elevation of 450 with a velocity of 100 m/s. Calculate its ?
(i) range
(ii) time of flight

Answer 1

a particle is projected at an angle of elevation 45° with velocity 100 m/s

(1) Range = u²sin2∅/g

=(100)² ×sin 2× 45°/10 { g = 10 m/s²

=(10000) × 1/10 = 1000 m

(2) time of flight = 2u.sin∅/g

= 2× 100 × 1/√2/10

= 10√2 sec