1. [-/2 Points] DETAILS WACOLPHYSAV1 2.P.015. MY NOTES ASK YOUR TEACHER A plane lands on a runway with a speed of 130 m/s, moving east, and it slows to a stop in 12.0 s. What is the magnitude (in m/s2) and direction of the plane's average acceleration during this time interval? magnitude m/s2 direction ---Select--- C 2. [-/2 Points] DETAILS WACOLPHYSAV1 2.P.016. MY NOTES ASK YOUR TEACHER An Olympic track runner starts from rest and has an acceleration of 1.5 m/s for 3.8 s, then has zero acceleration for the remainder of the race. Find the runner's speed (in m/s) at the following times. (a) at time t = 1.3 s m/s (b) the end of the race m/s