The expression −4,9t^2+50t+2 represents the height, in metres, of a toy rocket t seconds after launch. The initial height of the rocket, in metres, is
[1] 0
[2] 2
[3] 4.9
[4] 50
function =−4.9t2+50t+2function \ =-4.9t^2+50t+2function =−4.9t2+50t+2
at t = 0
its initial height = −4.9(0)2+50(0)+2-4.9(0)^2+50(0)+2−4.9(0)2+50(0)+2
=2=2=2
answer=2answer = 2answer=2 , that is second option.
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