Question

BRAINLIEST
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

Answer 1

Answer:

Explanation:

1) acceleration is the change in velocity of a body with respect to time.

acceleration = velocity/time

Given

velocity = 139m/s

time = 20secs

acceleration = 139/20

acceleration = 6.95m/s²

Hence its average acceleration during the first 20 seconds of the launch is 6.95m/s²

2) Speed is the rate of change of distance with respect to time.

average speed = distance/time

Time = distance/speed

Time = 100/7823

Time = 0.013s

3) Using the equation of motion v² = u²+2as

v² = 0²+2(15)(60)

v² = 30*60

v² =1800

v = √1800

v = 42.43m/s