This position-time graph describes an object's motion. Use it to determine the distance the object moves (in m) during the 10.0 seconds of motion.

  27

Explanation:

It moves 13 meters in the first two seconds, backtracks 9 meters in the next 4 seconds, then moves forward 5 meters in the last 4 seconds. The total distance traveled is ...

  13 m + 9 m + 5 m = 27 m

In the first interval, the object moves from 1 m to 14 m away from the position reference, hence a move of 13 meters.

im not to sure what it is

acceleration = (change in speed) / (time for the change)

change in speed = (20-120)= -100 m/s.

1.5 min = 90 sec

acceleration = -100/90 = -1.11 m/s^2.

we don't care about the 150kg or the 2,500 meters. they don't make any difference.

read more on -