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thanks a lotlook we will put the value of v which is 30 and t which is 10 in the equation so we will get the constant
a=-0.4t
v=-0.2t^2 +k
30=-0.2(10)^2 +K
30=-20+K
k=50
one more question
http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w08_qp_4.pdf
http://papers.xtremepapers.com/CIE/...AS Level/Mathematics (9709)/9709_w08_ms_4.pdf
question # 7ii
here in this question why aren't they taking t=0.5 and v=5 to fing k? what's the difference between these two situations?