You push yourself forward 2 meters on a skateboard at an acceleration of 0.3 m/s/s. Your mass and the mass of the skateboard is 54 kg. How much work did you do?

The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?

A51 kg woman skis down a hill and her kinetic energy is 9.96e4 j. what is her speed?

Aflute player hears four beats per second when she compares her note to a 523 hz tuning fork (the note c). she can match the frequency of the tuning fork by pulling out the “tuning join” to lengthen her flute slightly. what was her initial frequency?