Dear student velocity is slope of line of graph between position ant timeslope of first line =VA=tan 30=13Slope of second line VB=tan 60=3VAVB=13×13=13VA:VB =1:3Regards

please help in 4

please help in 4 4. 5. person moves 30 m north and then 20 m towards east and finally I he displacement of the person from the origin will be (A) 10 m along north (R) 10m long south (C) 10,nalongwest (D) zero travels along a straight road for half' the distance with wlocity 'he huff distance with velocity The average velocity is given by graph for IWO panicles and B are straight liacs inclined at angles ot- .:p• axi with the time ax's. The ratio of velocities of • boy walks to his school at a distance of 6 km with constant speed Of 2.5 km/hour and back with a constant »ecd of 4 knühr_ His average speed for round trip expressed in i' 40113 I - O ' long train mov:ng With a uniform velocity Of 45 km,'h. lime taken by the train to cross iVidgc of length SSO meters (B) 6S sec (C) SOsec

Dear student

v e l o c i t y i s s l o p e o f l i n e o f g r a p h b e t w e e n p o s i t i o n a n t t i m e s l o p e o f f i r s t l i n e = V_{A =} \tan 30 = \frac{1}{\sqrt{3}} S l o p e o f s e c o n d l i n e V_{B} = \tan 60 = \sqrt{3} \frac{V_{A}}{V_{B}} = \frac{1}{\sqrt{3}} \times \frac{1}{\sqrt{3}} = \frac{1}{3} V_{A} : V_{B} = 1 : 3 R e g a r d s

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