The position vector of a 6g object is given by (3t²+2)i+(7t²+3)j. The magnitude of the force (in Newtons) acting on this object is given by: Add your answer.
a) √(13t⁴ + 28t² + 13)
b) √(9t⁴ + 28t² + 9)
c) √(16t⁴ + 28t² + 16)
d) √(4t⁴ + 28t² + 4)