OBJECTIVES (in program glowscript)

Create

3D box objects

Update the position of an object

iteratively (repeatedly) to animate its motion

Update the momentum and position of an object iteratively (repeatedly) to predict its motion

1.We use a white box to represent the track. Type the following command and run the program.

track = box(pos=vector (0,-.05, 0), size=vector (2.0,0.05, .10), color=color.white)

2.We will now use a red boxwhose center is at the origin to represent a moving cart located at the origin. Type the following command and run the program.

cart=box(pos=vector (0,0,0), size= vector (0.1, 0.0 5, 0.06), color=color.red)

3. Reposition the cart so its left end is aligned with the left end of the track.

4.Give the cart a velocity of 0.5 m/s in the +x direction by adding the following command

velcart = vector(0.50,0,0) #sets the carts velocity at 0.5 m/s in the +x direction

5.Let us assume that our cart has constant velocity so our acceleration is zero. Add the following command

to your program: Accelcart = vector(0,0,0) #carts acceleration is set to zero

6. We now we set the initial time to zero, and set our step size, i.e. , to 0.01. Add the following commands and run your program.

t = 0 #initial time is 0s

deltat =0.01# time step size

7. As an example of a loop, enter the following commands and run the program.

while t

The statement:

t = t + deltat

8. We now want to model the constant velocity cart iteratively using a loop. Modify the loop in your program

to make it look like the following and run your program:

whilet

cart.pos =cart.pos + velcart*deltat #computes new position

velcart = velcart + accelcart*deltat #computes new velocity

t = t + deltat

print(The End)

9. Add the following line inside your loop (indented) and run the program: rate (100)

10.Modify your code so that the cart starts at the right end of the track and moves to the left till it just

reaches the end of the track.

How do I make this program work?

= 1 GlowScript 3.0 VPython 2 track box(pos=vector(0,-.05, 0), size=vector (2.0, 0.05, .10), color=color.white) 3 cart=box (pos=vector(-.9679,0,0), size=vector(.1, 0.05, .06), color=color.red) 4 velcart= vector(0.50,0,0)#sets the carts velocity at 0.5 m/s in the +x direction 5 accelcart= vector(0,0,0)#cart's acceleration is set to zero 6 t = 0 #initial time is s 7 deltat = 0.01 # time step size 8 whilet