Radar devices are used by law enforcement to be sure that individuals are driving safely. they tell the officer how fast the vehicle is traveling at that specific moment in time. the radar device determines the vehicle's instantaneous speed. acceleration. maximum velocity. average speed.

Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.