The coach of the Philadelphia Eagles walks back and forth along the sidelines of Lincoln Financial Field fifteen times in three minutes. What is the frequency of his pacing? Remember to change the time to seconds.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

Consider a system with two masses that are moving away from each other. why will the kinetic energy differ if the frame of reference is a stationary observer or one of the masses?

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.