Free-fall : Discuss the motion of an object under free fall. Neglect air resistance.
Motion Under Air Resistance
During the night , air moving from land to sea is called sea breeze.
Statement-1 : Sound travels faster in moist air Statement-2 : The density of moist air is less then density of dry air.
Statement-I : The speed of a body can be negative. Statement-II : If the body is moving in the opposite direction of positive motion, then its speed is negative.
Statement-1 : Light travels faster in glass than in air. Statement-2 : Because air is rarer than glass.