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FORCES

Total questions: 26

Worksheet time: 1hrs 21mins

Name
Class
Date
1.

LT#1: This affects how objects move.

a)

acceleration

b)

speed

c)

velocity

d)

force

2.

LT#1: A stack of books are on a flat table and an unbalanced force is applied from the side. The books will...

a)

MOVE in the direction with the greatest net force

b)

MOVE in the direction of the force due to friction

c)

NOT MOVE due to gravity

d)

NOT MOVE because of friction

3.

LT#1: Which of the following is FALSE (not true) about force?

a)

Forces act in pairs.

b)

Forces are measured in Newtons (N)

c)

Forces act in a particular direction.

d)

Forces and their effects are always seen.

4.

LT#3: The sum of all forces acting on a object is known as...

a)

gravitational force

b)

applied force

c)

balanced force

d)

net force

5.

LT#3: A racecar driver uses a parachute to slow down after a race. Calculate the net force.

a)

3 N

b)

7 N

c)

10 N

d)

17 N

6.

LT#3: Two chonky cats are sitting on either ends of a see-saw that is not moving with a force of 200 N each. Calculate the net force.

a)

0 N

b)

100 N

c)

200 N

d)

400 N

7.

LT#4: Which direction will the box move and with how much net force?

a)

20 N to the right

b)

12 N down

c)

17 N to the right

d)

Not enough information to answer

8.

LT#4: Which box will move down with 3 N of net force?

a)

Box A

b)

Box B

c)

Box C

d)

Box D

9.

LT#4: Calculate the net force. Determine if it is balanced or unbalanced and which direction the box will move.

a)

6 N; unbalanced; movement to the right

b)

8 N; balanced; movement to the right

c)

8 N; unbalanced; movement to the right

d)

6 N; balanced; no movement

10.
If F is force, k is spring constant and x is extension, Hooke's Law tells us that:
a)
F=k/x
b)
x=Fk
c)
k=Fx
d)
F=kx
11.
A graph of extension against force for an elastic material is:
a)
A downward curve
b)
An upward curve
c)
A straight line from any point on the x and y axis
d)
A straight line from the origin
12.
A stiff material has a:
a)
high spring constant
b)
low spring constant
c)
spring constant of any value
d)
spring constant which is difficult to predict
13.
A spring has a spring constant of 5N/cm.  What is its extension when loaded with 15N?
a)
4cm
b)
5cm
c)
3m
d)
3cm
14.
If extension = Stretched length - original length. What is the extension of spring D.
a)
1mm
b)
2mm
c)
3mm
d)
0mm
15.

An unstretched spring becomes longer when a force is applied to it. Which word describes the additional length of the spring gains?

a)

Expansion

b)

Extension

c)

Stretched

16.

When comparing spring A to B,

a)

A has a larger spring constant than B so A is a stiffer spring

b)

B has a larger spring constant than A so A is a stiffer spring

c)

A has a larger spring constant than B so B is a stiffer spring

d)

B has a larger spring constant than A so B is a stiffer spring

17.
Which of the following is a unit of mass?
a)
kilogram
b)
liter
c)
meter
d)
pound
18.
The mass of an object ___________________________.
a)
changes, depending on where it is located
b)
changes randomly
c)
changes, depending on temperature
d)
does not change
19.
Suppose an astronaut were to visit a planet where the gravity is half that of Earth.  His MASS on that planet would be ______________.
a)
half his Earth mass
b)
the same as his Earth mass
c)
twice his Earth mass
d)
zero
20.
Matter is anything that has _______ and takes up space. 
a)
weight
b)
mass 
c)
the ability to float
21.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
22.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
23.
The scientific unit for mass is
a)
Kg
b)
N
c)
pounds
d)
ounces
24.
If an object has more mass, then it will
a)
weigh more.
b)
weigh less.
c)
weigh the same as an object with less mass.
d)
always have more volume than an object with less mass.
25.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
26.

Weight is _________.

a)

the quantity of matter in an object.

b)

the measure of an object's inertia.

c)

the force exerted by gravity on an object's mass.

d)

equal to the mass of an object.

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