Which estimate is realistic? A) Volume of air in an inflated balloon is around 22.4dm³.
B) Weight of an apple is around 3.0N.
C) Area of a piece of tissue paper is around 17cm².
D) Potential energy of an adult living in a 2 story house is around 2500J.
E) Kinetic energy of a baby crawling on the ground is around 9.0J.

Provide a short explanation as to why you believe your answer is the most realistic.

Bone-strengthening physical activity done increases bone-mineral content and bone density in youth.

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?

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.