A 1,500 kg car moving with a speed of 4,00 m/s collidbs with a 50,000 kg truck moving with a speed of 1.80 m/s in the same direction. If the collision is perfect inelastic, the change in Kinetic energy of the car is

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

Karen is running forward at a speed of 9 m/s. she tosses her sweaty headband backward at a speed of 20 m/s. the speed of the headband, to the nearest whole number relative to a stationary observer watching karen

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?