The motions of five objects - A, B, C, D, and E - are represented by lines on the position-time graph below. Which line(s) reflect no acceleration? A B C time O E O D D A O None of these position

Stacks of Graphs Given the following position vs time graphs, sketch the corresponding velocity vs time graphs. 1 2 EUN time 5 time Name time time 6 time time o 3 time 1 of 1 time 7 NNA time time time 4 time Hour 8 time time time time

A motorcycle begins at rest at t0 = 0 seconds. The motorcycle starts moving, and eventually covers a distance d = 840 m, in a time tf = 189 s. In a coordinate system with north being the positive x-direction, the motorcycle's motion is in the northern direction (see figure). 1. What was the motorcycle's average velocity in in the northern direction vavg,N, in this period in meters per second?  2.  If the motorcycle's final velocity at tf was 12 m/s, what was the motorcycle's average acceleration in the northern direction, aavg,N, during this period in m/s2?

Answer parts A and B