Correct answer only ! answer the following questions using the velocity and time graph above. a. at what time(s) was the car stopped? b. at what time(s) was the car maintaining a constant velocity? c. at what time(s) did the car accelerate? d. at what time(s) did the car have a negative velocity?

Which object is most likely represented by a dot?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)

Select the three ways that the parallel-plate capacitor differs from a car battery.