#Mechanics mock set 3 question

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smoky cedar
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I need help on part C, I don't understand the mark scheme

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chilly lynx
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I would make two linear equations

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Then equate them

smoky cedar
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im not sure how to form that eqn with the info given

chilly lynx
smoky cedar
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o

chilly lynx
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Which can be used a the gradient

smoky cedar
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nvm i think it clicked

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the gradient in speed-time graphs represents acceleration

chilly lynx
smoky cedar
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i forgor

chilly lynx
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And for each graph

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You know one point

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Graph A : (0,2)

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Graph B : (2,0)

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Then sub it in

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To get a linear equation for both

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Then equate them

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And you will get the time