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2. A man has to go 100m north, 80m due East and 40m due South to reach a field. What is the distance and displacement. |
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Answer» Explanation: 1 BrainlyHelper BrainlyHelper 25.05.2018 Secondary School +13 pts Answered A man has to go 50m due north , 40m due east and 20m due SOUTH to reach a field . A) what distance he has to WALK to reah field? B) What is his displacement from his house to the field ? Concept of Physics - 1 , HC VERMA , CHAPTER "Rest and Motion : Kinematics 2 SEE ANSWERS Log in to add comment Answers prmkulk1978 prmkulk1978 Ace Solution: Distance : Distance is the total path COVERED by the man. Distance travelled by man=50m+40m+20m=110m Displacement : Displacement is the shortest path between source [house] and destination [ field]= AB See the figure : Draw Perpendicular BE to AC. BE=CD=40m AE=AC-CE=50-20=30 NOW, DISPLACEMENT AB=√AE²+EB² AB=√30²+40²=50m Angle with horizontal is given by tanθ=30/40=3/4 θ=tan⁻¹[3/4] direction north to east. ∴His displacement from his house to field is 50m , tan⁻¹[3/4] direction north to east. 4.6 143 votes THANKS 205 Comments Report V07926LOVYANSH Ambitious Answer: Explanation: Distance : Distance is the total path covered by the man. Distance travelled by man=50m+40m+20m=110m Displacement : Displacement is the shortest path between source [house] and destination [ field]= AB See the figure : Draw Perpendicular BE to AC. BE=CD=40m AE=AC-CE=50-20=30 NOW, DISPLACEMENT AB=√AE²+EB² AB=√30²+40²=50m Angle with horizontal is given by tanθ=30/40=3/4 θ=tan⁻¹[3/4] direction north to east. ∴His displacement from his house to field is 50m , tan⁻¹[3/4] direction north to east. |
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