A 50 kg girl is standing in a 300 kg rowboat and is at rest. If the girl steps out of the boat with a speed of 3m/s, what speed will the boat be pushed back with?

Iknow the first part it is the average star i am not 100% sure

If your workout exceeds an hour you should substitute "a sports drink" for water.hope my answer has you : )

Jenny and fred both play a long note on their trombones. a stationary observer hears the sound increasing and decreasing repeatedly in loudness. which of these must be true? the sound waves from the two trombones have slightly different frequencies.the sound waves from the two trombones have the same frequency.the sound waves from the two trombones have slightly different amplitudes.the sound waves from the two trombones have the same wavelength.the sound waves from the two trombones have slightly different velocities.  lolthe answer is          the sound waves from the two trombones have slightly different frequencies.

Well in that case, since an object moves with a constant velocity, there will be no acceleration as it is not increasing in speed.