An experimental robot travels along a straight line parallel to the x axis. During a test run, it is observed that the s

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An experimental robot travels along a straight line parallel to
the x axis. During a test run, it is observed that the scalar x
component of the robot’s acceleration is given as a function of
time by (-6t+18)m/s^2 for times in the interval , 0 less than
or equal to t less than or equal to 10, where t is the
number of seconds since observations began. At t = 0, the scalar x
component of the robot’s velocity is equal to (- 15 m/s) and the
robot is located at x = 1 m.
11. The robot is moving in the positive x direction during the
time interval
A. 1s less than or equal to t less than or equal to
5s. B. 1s < t less than or equal
to 5s. C.1 less than or equal to
t less than or equal to 3s. D. 0 less than
or equal to t < 3s
E. 1 < t < 5s.
12. During the time interval from t = 0 to t = 2 seconds, the
scalar x component of the robot’s average acceleration is equal
to
A. 12m/s^2. B. 0 m/s^2.
C. 6 m/s^2. D. 12m/s^2.
E. 24m/s^2
13. True or False: At t = 1 second, the robot is located at x =
- 7 m? A. True. B. False.