3. Which of following is not characteristic of air resistance (a) It always opposes motion
(b) It decrease with speed of object
(c) It increases with surface area
(d) It increases with density of air
4. Feather is dropped on the moon from a height of 1.40 met
m/s2. Determine the time for the feather to fall to the surfa
5. If the ratio of gravity in some solar planet is as mentioned
Fill the table below with suitable numbers: (Note g of Ea