two aircraft P and Q are flying at 300 speed. the direction along which P is flying is at right angles to the direction along which Q is flying. what is the magnitude of the velocity of the aircraft P relative to aircraft Q.

Idont understand the question

The objects are acted upon by only one force. gravity. mass times the acceleration of gravity (-9.81meters/second squared).

The radiation of the fire causes the saucepan to heat up. the conduction of the saucepan then to distribute the heat over the saucepan and to give heat to the water. the convection of the water distributing the heat within the water, till all the water is boiling