Plane travels 400 m towards north then 300 m towards south and 1200 m vertically upwards, then find resultant displacement ……….

Plane travels 400 m towards north then 300 m towards south and 1200 m

1.	Plane travels 400 m towards north then 300 m towards south and 1200 m vertically upwards, then find resultant displacement ……….
Answer» 1200 m 1300 m 1400 m 1500 m Solution : `VECR = 400 HATJ - 300 hatj + 1200 hatk` `vecr = 100 hatj + 1200 hatk` `\|vecr \| = sqrt ((100) ^(2) + (1200) ^(2))` `= sqrt ( 10000 + 1440000) ` `r = sqrt (1450000)` `=1204m` `therefore r ~~1200 m`