Question

me podrian ayudar en esto?

Answer 1

A) Posición en los instantes t = 0 y t = 2


r(t) = (2t + 2)i + (4t^4- 3t^2)j


r(0) = [2(0) + 2)i] + [4(0)^4 - 3(0)^2]j


r(0) = 2i


r(2) = [2(2) + 2]i + [4(2)^4 - 3(2)^2]j


r(2) = [4 + 2]i + [4(16) - 3(4)]j


r(2) = 6i + (64 - 12)j


r(2) = 6i + 52j


b) El vector desplazamiento entre esos instantes


Δr = r(2) - r(0)


Δr = (6i + 52j) - 2i


Δr = (6 - 2)i + 52j


Δr = 4i + 52j