Learn Encapsulation by Building a Projectile Trajectory Calculator - Step 5

Python
1

Tell us what’s happening:

I need help, I don’t know what’s wrong anymore. I’ve tried similar lines of code in the function, but none of them worked.

Your code so far

import math

GRAVITATIONAL_ACCELERATION = 9.81
PROJECTILE = "∙"
x_axis_tick = "T"
y_axis_tick = "⊣"

class Projectile:
    __slots__ = ('__speed', '__height', '__angle')

    def __init__(self, speed, height, angle):
        self.__speed = speed
        self.__height = height
        self.__angle = math.radians(angle)


    def __calculate_displacement(self):
        horizontal_component = self.__speed * math.cos(self.__angle)
        vertical_component = self.__speed * math.sin(self.__angle)
        squared_component = vertical_component**2
        gh_component = 2 * GRAVITATIONAL_ACCELERATION * self.__height
        sqrt_component = math.sqrt(squared_component + gh_component)
        
        return horizontal_component * (vertical_component + sqrt_component) / GRAVITATIONAL_ACCELERATION
        

# User Editable Region

    def __str__(self):
        return (f'\nProjectile details:\n'
        f'speed: {self.__speed} m/s\n'
        f'height: {self.__height} m\n'
        f'angle: {round(math.degrees(self.__angle))}°\n'
        f'displacement: {round(self.__calculate_displacement(), 1)} m \n')

ball = Projectile(10, 3, 45)
print(ball)

# User Editable Region

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Challenge Information:

Learn Encapsulation by Building a Projectile Trajectory Calculator - Step 5

2

In the angle instead of ‘round’ I’m using ‘int’.

3

Can you please share what your output looks like?

4

You just have an extra space before your last \n

5

Projectile details:
speed: 10 m/s
height: 3 m
angle: 45°
displacement: 12.6 m

The output is identical to the requested one.