Question 1:
Fill in the blanks with the correct answer.
(a) Free fall is the motion of an object due to ________ force only.
(b) The non-free fall motion of an object is affected by _________ resistance.
(c) __________ is the acceleration due to gravitational force acting on an object towards the centre of Earth.
Answer:
(a) gravitational
(b) air
(c) Gravitational acceleration
Fill in the blanks with the correct answer.
(a) Free fall is the motion of an object due to ________ force only.
(b) The non-free fall motion of an object is affected by _________ resistance.
(c) __________ is the acceleration due to gravitational force acting on an object towards the centre of Earth.
Answer:
(a) gravitational
(b) air
(c) Gravitational acceleration
Question 2:
The graph below shows the free fall of an object.
Explain the graph.
Answer:
• Before being released, the displacement of the object is zero. The object is stationary.
• At the moment the object is released, it moves with low velocity.
• This can be seen in the small value of gradient.
• In the final stage when the object is in free fall, it moves with velocity greater than at the initial stage.
• This can be seen in the greater value of gradient.
The graph below shows the free fall of an object.
Explain the graph.
Answer:
• Before being released, the displacement of the object is zero. The object is stationary.
• At the moment the object is released, it moves with low velocity.
• This can be seen in the small value of gradient.
• In the final stage when the object is in free fall, it moves with velocity greater than at the initial stage.
• This can be seen in the greater value of gradient.