The position of the front bumper of a test car under microprocessor control is given by x1t2 = 2.17 m +

14.80 m>s

2

2t

2 - 10.100 m>s

6

2t

6

. (a) Find its position and acceler-

ation at the instants when the car has zero velocity.

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor

What is the angular momentum of the bar about the axle?

Uppose we consider the system of the three capacitors as a single "equivalent" capacitor. given the charges of the three individual capacitors calculated in the previous part, find the total charge qtot for this equivalent capacitor. express your answer in terms of v and c.