Physics, 04.10.2019 21:30 trimommalone353

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20 seconds after launch, a space shuttle would be traveling skyward at a velocity of 139 m/s. what was its average acceleration during the first 20 seconds of the launch? *

a. 0 m/s²

b. 0.14 m/s²

c. 5 m/s²

d. 6.95 m/s²

it took the space shuttle 500 seconds to reach orbital speed of 7823 m/s. what was its average acceleration during this time? *

a. 14.406 m/s²

b. 13.158 m/s²

c. 10.803 m/s²

d. 15.646 m/s²

e. 10.861 m/s²

the space shuttle orbited at a speed of approximately 7823 m/s. how long would it take to travel 100 meters at this speed? *

a. 782, 300s

b. 7723 s

c. 782.3 s

d. 0.013 s

when a space shuttle's boosters were ignited, the shuttle experienced an acceleration of approximately 15 m/s². the launch tower was approximately 60 meters tall. how fast was the shuttle moving when it cleared the tower? *

a. 4 m/s

b. 42.4 m/s

c. 300 m/s

d. 1800 m/s

other:
the space shuttle re-entered the atmosphere 8000 km away from its runway at a speed of 7823 m/s. what is the space shuttle's average acceleration during re-entry and landing? *

3.824 m/s²

3824 m/s²

0.000489 m/s²

0.489 m/s²

30 minutes before landing, the shuttle was at an altitude of 130 km. what was its average vertical velocity during the last 30 minutes of its flight? (we are ignoring its horizontal movement.) *

30.02 m/s

14.03 m/s

45.64 m/s

50.24 m/s

72.22 m/s

the space shuttle touches down on the runway with a velocity of approximately 100 m/s. the runway is 4500 meters long. what is the average acceleration the shuttle experiences on the runway? *

-1.111 m/s²

-2.222 m/s²

-3.33 m/s²

-4.44 m/s

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