H2.11 2/2 points (graded) The acceleration of a particle varies with time according to the equation a (t) = pt2 - qt3, where p=2 m/s 4 and q= 6 m/s"5. Initially, the velocity of the particle is zero and position is 5 m from the origin. a. What is the velocity (in m/s) at t=1 sec? Enter your answer to two significant figures without units. -5/6 V - 10/10 b. What is the position of the particle (in m) at t=2s? Enter your answer to two significant figures without units. -1.93 V -1.93 Part D [] Bookmark this page Homework due Nov 17, 2022 10:00 PST Completed H2.11 1/1 point (graded) Two trains are moving at 31 m/s in opposite directions on the same track. The engineers see simultaneously that they are on a collision course and apply the brakes when they are 1054 m apart. Assuming both trains have the same acceleration, what must this acceleration be if the trains are to stop just short of colliding? Give your answer in m/s2 to two significant figures without units. -0.91 V