Question

The chart shows the time, initial velocity, and final velocity of three riders. A 4-column table with 3 rows. The first row labeled rider has entries Gabriella, Franklin, Kendall. The second row labeled time with entries 10 seconds, 8.5 seconds, 6 seconds. The third column labeled initial velocity has entries 55, 50, 53.2. The fourth column labeled final velocity has entries 32, 50, 67. Which best describes the riders? Gabriella is speeding up at the same rate that Kendall is slowing down, and Franklin is not accelerating. Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating. Gabriella and Franklin are both slowing down, and Kendall is accelerating. Gabriella is slowing down, and Kendall and Franklin are accelerating.

Answer 1

Answer:

The option which best describes the riders is :

Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating

Explanation:

Franklin is not accelerating as the final velocity (50 km/h) is equal to the initial velocity (50 km/h) , rather he is moving at a constant speed.

Acceleration = (final velocity - initial velocity) / (final time - initial time)

According to acceleration formula given above , the rate at which Gabriella is slowing down is 2.3 km/h and the rate at which Kendall is speeding up is also 2.3 km/h.

Hence the option stating "Gabriella is is slowing down at the same rate that Kendall is speeding up and Franklin is not accelerating"  is true and it best describes the riders.

Answer 2

Answer: B.

B. Gabriella is slowing down at the same rate that Kendall is speeding up, and Franklin is not accelerating.