You need to use the velocity, since distance = speed * time
The speed is -15 m/s, so after t seconds, starting from x=30,
x = 30 - 15t
So, you are correct that x(1) = 15, but after 2 seconds,
x(2) = 30 - 15*2 = 0
The object has indeed moved 30m after 2 seconds, but it has moved back to the 0 coordinate.
A car is driving in the negative X direction at a steady speed of 15 m/s. if it starts at a position of 30m:
What is its displacement in the first second? My answer was 15m and used Xf-Xo (final-initial) to find the displacement
What is his displacement in the first two seconds? 30m
Where is it at time of 1 second? 15m
Where is it at a time of 2 seconds?30m
Am I doing this correct or what equations should I use?
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