Why does it take much longer time and distance to stop a moving ship in water than a moving car on the road

What would the difference of spectral lines emitted by hydrogen gas in distant galaxies which is normally found at a wavelength of 21 cm on earth, be observed at 21.1 centimeters?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

The cerebellum controls? thirst sensations sleep-wake cycles hand-eye coordination heart rate and pulse