(a) A test charge +q is brought to a point A a distance r from the center of a sphere having a net charge +Q. (b) Next, a test charge +6 q is brought to a point B a distance 6 r from the center of the sphere. Compared with the electrostatic potential energy of configuration (a), the potential energy in configuration (b) is

In which situation is the acceleration of a car negative? question 5 options: a)the velocity of a car was 75 km/hr over 4 hours. b)the velocity of a car reduced from 50 km/hr over one minute. c)the velocity of a car increased from 40 km.h to 75 km/h over 15 minutes. d)the velocity of a car was 45 km/hr at 2: 00pm and at 4: 00pm its velocity was 85 km/ht.