Newton's Second Law

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For each question, choose the option that you think is correct. The first 4 questions refer to free fall motion.
The next 6 questions refer to falling in situations where there is air resistance.

Questions and Answers

1.

In the absence of air resistance, the elephant and the feather strike the ground at the same time.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
2.

The force of gravity acting on the objects cause the objects to accelerate downwards.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
3.

As the weight of the elephant is bigger, the elephant experiences a bigger acceleration than the feather.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False
4.

All objects(regardless of their mass) experience the same acceleration when in a state of free fall.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
5.

Objects will continue to accelerate until the air resistance increases to a large enough value to balance the downward force of gravity.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
6.

The elephant experiences a bigger air resistance than the feather.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
7.

The feather reaches terminal velocity very quickly because its weight is small and it takes only a short time for the air resistance to increase to a big enough value to balance the downward force of gravity.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
8.

The elephant never reaches terminal velocity as its weight is still bigger than the air resistance acting on it even when the elephant reaches the ground.
- A.
  
  True
- B.
  
  False
Correct Answer
A. True
9.

An object reaches terminal velocity when the air resistance acting on it is bigger than its weight.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False
10.

The bigger the speed of the falling object, the smaller the air resistance acting on it.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

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Current Version
Jan 11, 2013

Quiz Edited by
ProProfs Editorial Team
Apr 24, 2010

Quiz Created by
Tan CH

Newton's Second Law

In the absence of air resistance, the elephant and the feather strike the ground at the same time.

The force of gravity acting on the objects cause the objects to accelerate downwards.

As the weight of the elephant is bigger, the elephant experiences a bigger acceleration than the feather.

All objects(regardless of their mass) experience the same acceleration when in a state of free fall.

Objects will continue to accelerate until the air resistance increases to a large enough value to balance the downward force of gravity.

The elephant experiences a bigger air resistance than the feather.

The feather reaches terminal velocity very quickly because its weight is small and it takes only a short time for the air resistance to increase to a big enough value to balance the downward force of gravity.

The elephant never reaches terminal velocity as its weight is still bigger than the air resistance acting on it even when the elephant reaches the ground.

An object reaches terminal velocity when the air resistance acting on it is bigger than its weight.

The bigger the speed of the falling object, the smaller the air resistance acting on it.