Position coordinate of a particle confined to

move along a straight line is given by s=

2t

3–24t+ 6, where s is measured in meters

from a convenient origin and t is in seconds.

determine: (a) time required for the particle

to reach a velocity of 72 m/s from its initial

condition at t= 0, (b) acceleration of the

particle when v= 30 m/s, and (c) net

displacement of the particle during the

interval from t= 1 s to t= 4 s.

The 10-kg double wheel with radius of gyration of 125mm about o is connected to the spring of stiffness k = 600 n/m by a cord which is wrapped securely around the inner hub. if the wheel is released from rest on the incline with the spring stretched 225 mm, calculate the maximum velocity v of its center o during the ensuing motion. the wheel rolls without slipping

In what direction does an applied force move an object

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.