Tell us what’s happening:
I have the correct output but I keep getting the error, 'The string representation for Projectile(45,45,45) should be correct. I tried that on my local machine and I got the same output.
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)
solution = horizontal_component * (vertical_component + sqrt_component) / GRAVITATIONAL_ACCELERATION
return solution
# User Editable Region
def __str__(self):
output_string = 'Projectile details: '
output_string += '\nspeed: ' + f'{self.__speed} m/s'
output_string += '\nheight: ' + f'{self.__height} m'
output_string += '\nangle: ' + f'{int(math.degrees(self.__angle))}°'
output_string += '\ndisplacement: ' + f'{self.__calculate_displacement():.1f} m'
return output_string
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
