[Motion with Non-Uniform Acceleration]

Question 1

30. Non-Uniform Acceleration

Answer 1

Acceleration of an object is not constant.

Question 2

31. Drag

Answer 2

The frictional force experienced by an object travelling through a fluid.

Question 3

32. Fluid

Answer 3

Liquid or gas.

Question 4

33. Free fall

Answer 4

A free falling object is an object that is falling under the sole influence of gravity. Any object that is being acted upon only by the force of gravity is said to be in a state of free fall.

Question 5

34. Terminal Velocity

Answer 5

Highest constant velocity attainable by an object as it falls through a fluid (e.g. air).
Sum of the drag force (and upthrust) is equal to the downward force of gravity acting on the object. Σ D = W.