You are driving along a highway at 25 m/s when you hear the siren of an emergency vehicle traveling at constant speed in the opposite direction on the other side of the highway. when the vehicle is approaching you, you hear the frequency of the siren as 2380 hz, but when it is past you the frequency becomes 1680 hz. what is the speed of the vehicle? the speed of sound in air is 343 m/s.

volts times amps 6 x 0.5 3w

the displacement produced by the body.  

the amount of force subjected to the body.  

the angle between the direction of force and displacement

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19