Question

Question 16
Magnitude is a measure of how strong a force is.

True
False
Question 17


The picture above represents an example of:

a
balanced forces
b
unbalanced forces
c
net force
d
magnitude
Question 18
When two forces are in opposite directions, and they are the exact same magnitude, the forces will:

a
eventually reach equilibrium
b
cancel out
c
subtract from each other
d
go on infinitely
Question 19
When forces are in opposite directions, they subtract from one another.

True
False
Question 20


In the picture above, which of the following is true?

a
both are examples of scalar
b
A. represents vector and B. represents scalar
c
A. represents scalar and B. represents vector
d
both are examples of vectors
Question 21


When same vectors are in the same direction they add. When same vectors are in opposite directions, they:

a
also add
b
subtract
c
multiply
d
divide
Question 22


In the picture above, calculate the Net force for each force diagram. Choose the correct answer in order from top to bottom.

a
0 N, 20N, 2N
b
0N, 2N, 20N
c
20N, 2N, 0N
Question 23
Which of the following is an example of Newton's First Law?

a
A stationary book on the table must be picked up in order for it to move
b
A baseball hits collides with a fence and they exchange forces
c
A rocket made with lighter composite materials will accelerate faster than a heavier one
d
Increasing the mass on an object experiencing the same force would decrease the acceleration
Question 24
Susan gently pushes the tip of her finger against the eraser on her pencil and the pencil does not move. Which of the following figures best illustrates the interaction of forces between Susan’s finger and her pencil?

a




b




c




d




Question 25
Four students push on a block of wood with the forces shown in the diagram below. Assume friction is negligible.





What is the net force acting on the block? Are the forces balanced or unbalanced? How will the block move?

a
The net force on the block is 11 N. The forces are unbalanced. The block will move to the right.
b
The net force on the block is 25 N. The forces are balanced. The block will move to the right.
c
The net force on the block is 11 N. The forces are balanced. The block will move to the right.
d
The net force on the block is 25 N. The forces are balanced. The block will move to the left.
e
The net force on the block is 25 N. The forces are unbalanced. The block will move to the left.
f
The net force on the block is 25 N. The forces are unbalanced. The block will move to the right.
g
The net force on the block is 11 N. The forces are balanced. The block will move to the left.
h
The net force on the block is 11 N. The forces are unbalanced. The block will move to the left.
Question 26
An object is moving at a constant speed. If a balanced force is applied in the opposite direction the object is moving, what will most likely happen?

a
The object will change direction.
b
The object will slow down and eventually stop moving.
c
The object will continue moving at a constant speed.
d
The object will speed up.

Answer 1

I can answer the ones that don’t need the pictures, but I need the diagrams for Questions 17, 20, 22, 24 and 25. Please upload those images or describe each diagram (directions and magnitudes of the forces).

Answers (with brief explanations) for the questions I can do now:

16. True
- Magnitude is the size/strength of a force.

18. b (cancel out)
- Equal opposite forces produce zero net force (they cancel).

19. True
- Opposite-direction forces combine algebraically (one subtracts from the other).

21. b (subtract)
- Identical vectors in opposite directions subtract (result is difference).

23. a
- Newton’s First Law (inertia): an object at rest stays at rest unless acted on by a net external force.

26. c
- If forces are balanced (net force = 0), an object moving at constant speed continues moving at that speed.

If you upload or describe the missing diagrams for Q17, Q20, Q22, Q24, and Q25, I’ll finish those answers and show the calculations.