There are 4 short calculation multiple choice questions. Read each question care
ID: 1526414 • Letter: T
Question
There are 4 short calculation multiple choice questions. Read each question carefully and indicate your answer clearly on your scantron. The velocity of an object as a function of time is given by v(t) = 2m/s + (3m/s^2)t - (1m/s^3)t^2. Determine the instantaneous acceleration of the object at time t = 5s. 2 m/s^2 -8 m/s^2 -7 m/s^2 0 m/s^-2 m/s^2 A force F = 12Ni-10Nj acts on an object. How much work does this force do as the object moves from the origin to point r = 13mi + 11mj? 266 J 37 J 62 J 0 J 46 J A 7 kg object is acted on by two forces. One of the forces is 10 N acting toward the east. Which of the following is the other force if the acceleration of the object is 1 m/s^2 toward the east? 6 N east 3 N west 12 N east 9 N west, 7 N westExplanation / Answer
5.
velocity is given as
V(t) = 2 + 3 t - t2
acceleration is given as
a(t) = dV(t)/dt = d/dt ( 2 + 3 t - t2)
a(t) = 3 - 2t
at t = 5
a(t) = 3 - 2 (5)
a(t) = - 7 m/s2
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.