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

Question

anonymous · Answer

i'm really not sure but from 'they tell officer how fast' i can say that might be speed that is told.

anonymous · Answer

or it can show acceleration too but that won't be helpful for deceleration as you won't be sure of final velocity of the car.

radar · Answer

speed as a result of the doppler shift the moving vehicle introduces to the reflected beam.