Objects A and B are dropped from rest near the Earth's surface. Object A has a mass m and object B has a mass of 2m. After 2 seconds of free fall, object A has a speed v and has fallen a distance d. What are the speed and distance of fall of
object B after 2 seconds of free fall? (neglect air resistance)

A.) speed = v; distance = d.

B.) speed = v/2; distance = 2d

C.) speed = v/2; distance = d/2

D.) speed = 2v; distance = 2d

Describe the path of a ray that approaches a mirror parallel to the principal axis.

What are the theoretical properties of a gas at a temperature of 0 kelvin?

Click the game tab at the bottom of the simulation and select level 1. (there is no seesaw balance for this part of the activity.) balance the first equation, and click check to see if you got it right. if you can’t balance it in the first try, you can try again. work through the five equations for level 1. click continue to go on to level 2, and later level 3. each level is more difficult than the one before. keep trying until all the equations are balanced. in one or two sentences, describe how you did in the balancing game. in a few more sentences, explain one strategy you learned for balancing more complex equations.