Question

A projectile is projected with
( 3i+ 4 j +5k )m/s. Point of
projection is taken as origin and East, North and vertically upward directions are taken as positive x,y, Z-directions respectively (g=10ms) All are in Sl units Its displacement when it hits the XY-plane is

Answer 1

Explanation:

Correct option is

B

5 m

cosθ=525=21

θ=45

∣V∣=9+16+25=52

Range=gv2sin2θ

=10(50)2sin90

=1050

=5m.