Calculus
posted by Anonymous .
1.If a body moves in a straight line according to the law s= 24t +3t^2  t³, where s is the distance measured in meters from the origin and t is the time in seconds after it starts to move, calculate the body’s velocity as a function of time.
a.v = 30t – 3t²
b.v= 30t  t²
c.v = 24 + 3t t^2
d.v = 24 +6t 3t²
I think it's D but also confused by A
2.what is the velocity of the body in question 10 when t = 3seconds?
a.15 m/s
b.27 m/s
c.63 m/s
d.81 n/s
I think it's A but confused it might by C.
can you help me .
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