1. meters per second 2. meters per second 3. meters per second 4.
meters per second 5. The average of #3 and #4 6. Another method and
answer 7. There isn’t enough information provided to approximate the speed
Before watching the videos, think about and answer these questions to the best of your ability.
A car speeds up as it drives away from a traffic light. The car’s GPS unit records its distance from the light in the table below:
How could you compute an approximation of the car’s speed at the 5-second
mark?
Is the value you computed:
Equal to the car’s speed at the 5-second mark An
underestimate of the car’s speed at the 5-second mark An overestimate of the car’s
speed at the 5-second mark Neither an underestimate nor an overestimate You
can’t tell without having more information
How could you improve your approximation of the car’s speed at the 5-second mark?
You don’t need to make an improvement because the speed you calculated is the
car’s speed at the 5-second mark Use a different pair of points from the table to
compute the speed Use two pairs of points from the table to compute two speeds,
and then average these speeds Use a larger interval of time (e.g., if you originally
used a 1-second time interval, a 2-second time interval would improve your
approximation) Use a smaller interval of time (which would require additional
information)