A skydiver jumped out of an airplane and deployed her parachute 60 seconds later. This table shows her altitude over time.
Time (seconds) Altitude (feet)
0 14,000
10 12,800
20 11,300
30 9,700
40 8,100
50 6,500
60 4,900
Complete the sentence. Round your answer to the nearest whole number.
The skydiver fell at an average speed of
feet per second after jumping out of the airplane and before deploying her parachute.
152
200
To determine the average speed of the skydiver falling after jumping out of the airplane and before deploying her parachute, we need to calculate the change in altitude divided by the change in time.
Altitude change = 14,000 - 4,900 = 9,100 feet
Time change = 60 seconds - 0 seconds = 60 seconds
Average speed = Altitude change / Time change
Average speed = 9,100 feet / 60 seconds
Rounding to the nearest whole number, the skydiver fell at an average speed of approximately 152 feet per second.
To find the average speed of the skydiver falling before deploying her parachute, we need to calculate the change in altitude over the given time interval.
First, we need to determine the change in altitude. Using the given table, we can see that the initial altitude is 14,000 feet, and the final altitude is 4,900 feet. Therefore, the change in altitude is 14,000 - 4,900 = 9,100 feet.
Next, we need to determine the time interval. The skydiver deployed her parachute 60 seconds after jumping out of the airplane. So, the time interval is 60 seconds.
Finally, we can calculate the average speed using the formula:
Average speed = Change in altitude / Time interval
Plugging in the values, we have:
Average speed = 9,100 feet / 60 seconds
Now, we can calculate the average speed by dividing 9,100 by 60:
Average speed ≈ 151.66667 feet/second
Rounded to the nearest whole number, the skydiver fell at an average speed of 152 feet per second after jumping out of the airplane and before deploying her parachute.