HELP!!A boat heads directly north 15m/s across a river 300m wide flowing at 6m/s west. A:What is the Velocity of the boat relative to the river bank? B. HOW long will it take to cross the river? C:how far down stream will the boat travel to if it reaches the other side of the river bank? D. What is new position of the boat relative to the starting point after 5 seconds?.. Explain all four in details please.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

Earthplanet yplanet y5=earth     *many different equationsplanet x1.5=earthplanet x is two times planet yobject 5,2500 mass5,1,3,2,4object 1 is four times obect 4