An illustration shows quadrant one of a coordinate plane where the x-axis and y-axis range from 0 to 6 in increments of 1. The y-axis is titled distance in feet and the x-axis is titled time in seconds. A solid line, labeled A, is marked on the graph and passes through coordinates left parenthesis 0 comma 0 right parenthesis and left parenthesis 3 comma 6 right parenthesis. A dotted line, labeled B, is marked on the graph and passes through coordinates left parenthesis 0 comma 0 right parenthesis and left parenthesis 6 comma 6 right parenthesis. A dashed line, labeled C, is marked on the graph and passes through coordinates left parenthesis 0 comma 0 right parenthesis and left parenthesis 6 comma 3 right parenthesis.

Which of these objects would reach 100 feet in the least amount of time?

(1 point)
Responses

object A
object A

object B
object B

object C
object C

They would all reach 100 feet at the same time.

1 answer

To determine which object reaches 100 feet in the least amount of time, we can analyze the slopes of each line:

  1. Line A passes through (0, 0) and (3, 6):

    • The slope (representing speed) can be calculated as change in distance divided by change in time: \[ \text{slope of A} = \frac{6 - 0}{3 - 0} = \frac{6}{3} = 2 \text{ feet/second} \]
  2. Line B passes through (0, 0) and (6, 6):

    • The slope is: \[ \text{slope of B} = \frac{6 - 0}{6 - 0} = \frac{6}{6} = 1 \text{ foot/second} \]
  3. Line C passes through (0, 0) and (6, 3):

    • The slope is: \[ \text{slope of C} = \frac{3 - 0}{6 - 0} = \frac{3}{6} = 0.5 \text{ feet/second} \]

Now, to find the time taken to reach 100 feet for each object, we can use the formula: \[ \text{time} = \frac{\text{distance}}{\text{speed}} \]

  • For Line A: \[ \text{time for A} = \frac{100 \text{ feet}}{2 \text{ feet/second}} = 50 \text{ seconds} \]

  • For Line B: \[ \text{time for B} = \frac{100 \text{ feet}}{1 \text{ foot/second}} = 100 \text{ seconds} \]

  • For Line C: \[ \text{time for C} = \frac{100 \text{ feet}}{0.5 \text{ feet/second}} = 200 \text{ seconds} \]

Based on this analysis, object A would reach 100 feet in the least amount of time, which is 50 seconds.

Response: object A