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secondary 3 | E Maths
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pls kindly help with ii and iii (some explanation would be appreciated !)
Date Posted: 4 years ago
Views: 459
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done
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Hope this helps
Date Posted:
4 years ago
hi can help explain iii , why can’t equate to positive 7 ? why can’t equate to 15 ? why can’t equate to 8 ? then minus to get the gap ? pls help answer all qns if possible ...
thanks WAi Mun . upon reading ur ans again , i can understand . first is , when time is 0 , x will be 0. Then when x is 0 , y will be 0. hence , left of ramp point is (0,0). hence , rightmost of ramp encounters height drop of 7cm . means new height = 0-7 = -7. then we find x value when y=-7
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