Tell us what’s happening:
What exactly is wrong here. I’m getting Projectile(45, 45, 45) should be correct. I have checked this issue on the forum and confirmed the spacing and spelling is correct. I also made it as one string. I really don’t get where I am going wrong.
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):
m = (f'\n Projectile details: \n speed: {self.__speed} m/s \n height: {self.__height} m \n angle: {int(math.degrees(self.__angle))}° \n displacement: {round(self.__calculate_displacement(), 1)} m \n')
return m
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