A man covered following displacements. Find the net displacement of the person (i) 25m west (ii)` 20 m 30^(@)` east of south (iii)`5sqrt(3)m` south (iv) 10 m east (v) `10 m 60^(@)` north of west
Answered Feb 05, 2023
Correct Answer - `20m, 60^(@)` south of west
Correct Answer - A `tan.pi/3+2tan.(2pi)/3+4tan.(4pi)/3+8tan.(8pi)/3` `=tan.pi/3+2tan(pi-pi/3)+tan.pi/3+4tan(pi-pi/3)+tan.pi/3+8tan(3pi-pi/3)` `=tan.pi/3-2tan.(pi)/3+4tan.(pi)/3-8tan.(pi)/3` `=-5tan.pi/3=-5sqrt3`
Correct Answer - `[30sqrt(3I) muT]`
1. Scalars: Distance travelled, speed, work done, energy. 2. Vectors: Displacement, velocity, force.
Correct Answer - 10 km/h,`30^(@)W" of "N`
Correct option is D) Only II is true
D) Mediterranean vegetation
Correct Answer - (i), (ii), (iii), (iv), (vi), (ix)
Correct Answer - `(i)" "1" "(ii)" "-92" "(iii)" "18" "(iv)" "32" "(v)" "1" "(vi)" "9`
Correct Answer - `x=(-sqrt(3))/(2)" or "x=-2sqrt(3)`
D) USA, England, China
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