VPython

• An example:

• from visual import *

• floor = box (length = 4, height = 0.5, width=4, color=color.blue)

• ball=sphere(pos=(0,4,0), color=color.red)

• ball.velocity=vector(0,-1,0)

• dt=0.01

• while True:

  • ball.pos = ball.pos+ball.velocity*dt
  • if ball.y<1: ball.velocity.y = -ball.velocity.y
  • else: ball.velocity.y = ball.velocity.y - 9.8*dt

Notes: