Speed control during mission in Drone Programming - Practice Problems & Coding Challenges

Challenge - 5 Problems

❓ Predict Output

intermediate

What is the output of this speed adjustment code?

Consider this snippet controlling drone speed during a mission. What will be printed?

Drone Programming

speed = 10
for waypoint in range(3):
    if speed > 5:
        speed -= 3
    print(f"Speed at waypoint {waypoint}: {speed}")

A

Speed at waypoint 0: 7
Speed at waypoint 1: 4
Speed at waypoint 2: 4

B

Speed at waypoint 0: 7
Speed at waypoint 1: 4
Speed at waypoint 2: 1

C

Speed at waypoint 0: 10
Speed at waypoint 1: 7
Speed at waypoint 2: 4

D

Speed at waypoint 0: 7
Speed at waypoint 1: 7
Speed at waypoint 2: 7

💡 Hint

Look carefully at how speed changes inside the loop and when it stops decreasing.

The speed starts at 10. At waypoint 0, speed > 5 so speed becomes 7. At waypoint 1, speed is 7 > 5 so speed becomes 4. At waypoint 2, speed is 4 which is not > 5, so speed stays 4.

🧠 Conceptual

intermediate

Which statement best describes speed control in a mission?

In drone programming, why is it important to adjust speed dynamically during a mission?

A To avoid any speed changes to keep the mission predictable

B To keep the drone always at maximum speed regardless of conditions

C To save battery by flying slower when possible and faster when needed

D To randomly change speed to confuse obstacles

💡 Hint

Think about energy use and mission efficiency.

Adjusting speed helps conserve battery and adapt to mission needs, like slowing near obstacles or speeding on clear paths.

🔧 Debug

advanced

What error does this speed control code raise?

Identify the error when running this code snippet:

Drone Programming

speed = 5
for i in range(3):
    if speed < 10:
        speed += 2
    print(speed)

A SyntaxError due to missing colon after if statement

B TypeError because speed is an integer

C IndentationError due to print statement

D NameError because variable i is not used

💡 Hint

Check the if statement syntax carefully.

The if statement is missing a colon at the end, causing a SyntaxError.

❓ Predict Output

advanced

What is the final speed after this mission segment?

Given this code controlling speed increments, what is the final speed printed?

Drone Programming

speed = 3
increments = [2, -1, 4, -3]
for inc in increments:
    speed = max(0, speed + inc)
print(speed)

A 3

B 5

C 6

D 4

💡 Hint

Add each increment carefully and ensure speed never goes below zero.

Speed changes: 3+2=5, 5-1=4, 4+4=8, 8-3=5. Final speed is 5.

🚀 Application

expert

How many speed changes occur in this mission code?

Count how many times the speed variable changes value during this mission segment:

Drone Programming

speed = 7
changes = 0
for step in range(5):
    new_speed = speed - step
    if new_speed != speed:
        speed = new_speed
        changes += 1
print(changes)

A 2

B 5

C 3

D 4

💡 Hint

Check each loop iteration and compare new_speed to current speed.

Speed changes at steps 1,2,3,4 but not at step 0 because new_speed equals speed then.