A rocket carrying a satellite is accelerating straight up from the earth's surface. At 1.25 s after liftoff, the rocket clears the top of its launch platform, 69 m above the ground. After an additional 4.80 s , it is 1.00 km above the ground.

Calculate the magnitude of the average velocity of the rocket for the 4.80 s part of its flight.

Express your answer using two significant figures.

(m/s)

part B:

Calculate the magnitude of the average velocity of the rocket the first 6.05 s of its flight.
Express your answer using two significant figures.

(m/s)

To calculate the average velocity of the rocket, we need to determine the change in position (displacement) and divide it by the time taken. Let's calculate the average velocity for each part of the rocket's flight.

For part A:
1. Determine the change in position (displacement):
- The rocket clears the top of the launch platform at 69 m above the ground.
- After an additional 4.80 s, it is 1.00 km above the ground.
- The change in position is the difference between these two heights: (1.00 km - 69 m)

2. Convert the change in position to meters for consistency:
- 1.00 km = 1000 m
- Therefore, the change in position is (1000 m - 69 m)

3. Determine the time taken:
- The change in time is given as 4.80 s.

4. Calculate the average velocity:
- Average velocity = (change in position) / (change in time)

Now, let's plug in the values and calculate the average velocity for part A.

To calculate the average velocity of the rocket, we can use the formula:

Average velocity = (change in displacement) / (change in time)

For the first part,

Step 1: Calculate the change in displacement:
Change in displacement = Final position - Initial position
Change in displacement = (1.00 km - 69 m)
Change in displacement = 931 m

Step 2: Calculate the change in time:
Change in time = 4.80 s - 1.25 s
Change in time = 3.55 s

Step 3: Calculate the average velocity:
Average velocity = (change in displacement) / (change in time)
Average velocity = (931 m) / (3.55 s)
Average velocity ≈ 262 m/s

Therefore, the magnitude of the average velocity of the rocket for the 4.80 s part of its flight is 262 m/s.

For the second part (part B),

Step 1: Calculate the change in displacement:
Change in displacement = Final position - Initial position
Change in displacement = (1.00 km - 69 m)
Change in displacement = 931 m

Step 2: Calculate the change in time:
Change in time = 6.05 s

Step 3: Calculate the average velocity:
Average velocity = (change in displacement) / (change in time)
Average velocity = (931 m) / (6.05 s)
Average velocity ≈ 154 m/s

Therefore, the magnitude of the average velocity of the rocket for the first 6.05 s of its flight is 154 m/s.