The sum of the forces in newtons exerted on the 360 kg sport plane (including its weight) during an interval of lime is
(–1000 + 280t)i + (480 – 430t) j + (720 + 200t )k,
where t is the time in seconds. At t = 0, the velocity of the plane’s center of mass relative to the earth fixed reference frame is 20i + 35j – 20k (m/s). If you resolve the sum of the forces on the plane into components tangent and normal to the plane’s path at t = 2 s, what are the values of ∑Ft and ∑Fn?
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