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Ch. 4 Forces in One Dimension

Total questions: 60

Worksheet time: 28mins

Name
Class
Date
1.

An interaction with this causes a gravitational force

a)

Earth

b)

String

c)

Supporting Surface

d)

Spring

e)

Rough Surface

2.

An interaction with this causes a normal force

a)

Earth

b)

String

c)

Supporting Surface

d)

Spring

e)

Rough Surface

3.

An interaction with this causes a Tension force

a)

Earth

b)

String

c)

Supporting Surface

d)

Spring

e)

Rough Surface

4.

An interaction with this causes a Spring Force

a)

Earth

b)

String

c)

Supporting Surface

d)

Spring

e)

Rough Surface

5.

An interaction with this causes a Friction Force

a)

Earth

b)

String

c)

Supporting Surface

d)

Spring

e)

Rough Surface

6.

The rule for the direction of Fg

a)

Always Up

b)

In the direction of motion

c)

Depends on the exact situation

d)

Toward the Center of the Earth (down)

e)

Against the direction of motion

7.

The rule for the direction of Normal Force, n

a)

Always Up

b)

Parallel to the surface

c)

Perpendicular to the surface

d)

Toward the Center of the Earth (down)

e)

Against the direction of motion

8.

The rule for the direction of Friction force, f

a)

Always Up

b)

Parallel to the surface; against motion

c)

Perpendicular to the surface; with motion

d)

Toward the Center of the Earth (down)

e)

Always left; never right

9.

The rule for the direction of force of spring, Fs

a)

Always Up

b)

In the direction of motion

c)

Parallel to surface

d)

Toward the Center of the Earth (down)

e)

Opposite how you displaced the spring

10.

The meaning of this symbol - Fg

a)

Force of Spring

b)

Gravitational Field Strength

c)

Mass

d)

Weight

e)

Spring Constant

11.

The meaning of this symbol - m

a)

Force of Spring

b)

Gravitational Field Strength

c)

Mass

d)

Weight

e)

Spring Constant

12.

The meaning of this symbol - g

a)

Force of Spring

b)

Gravitational Field Strength

c)

Mass

d)

Weight

e)

Spring Constant

13.

The meaning of this symbol - Fs

a)

Force of Spring

b)

Spring Constant

c)

Mass

d)

Weight

e)

Displacement

14.

The meaning of this symbol - k

a)

Force of Spring

b)

Spring Constant

c)

Mass

d)

Weight

e)

Displacement

15.

 Δx\Delta x  The meaning of this symbol

a)

Force of Spring

b)

Spring Constant

c)

Mass

d)

Weight

e)

Displacement

16.

The meaning of this symbol, f

a)

Force of Friction

b)

coefficient of friction

c)

Mass

d)

Weight

e)

Normal Force

17.

The meaning of this symbol μ\mu  

a)

Force of Friction

b)

coefficient of friction

c)

Mass

d)

Weight

e)

Normal Force

18.

The meaning of this symbol, n

a)

Force of Friction

b)

coefficient of friction

c)

Mass

d)

Weight

e)

Normal Force

19.

Units of this variable, Fg

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

20.

Units of this variable, m

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

21.

Units of this variable, Fs

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

22.

Units of this variable, k

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

23.

 Δx\Delta x  Units of this variable,

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

24.

Units of this variable, f

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

25.

 μ\mu  Units of this variable,

a)

Newtons

b)

N/m

c)

m

d)

kg

e)

no unit

26.

When an object is at rest you can say... (select all that apply)

a)

The acceleration is zero

b)

The forces acting on it are balanced

c)

The forces acting on it are unbalanced

d)

The net force is zero

e)

The net force is NOT zero

27.

A 10kg object has a mass of

a)

98 N

b)

10 kg

c)

9.8 N

d)

10 N

e)

1 N

28.

A 10kg object has a Weight of

a)

98 N

b)

10 kg

c)

9.8 N

d)

10 N

e)

1 N

29.

A 10kg object has a gravitational force, Fg, of

a)

98 N

b)

10 kg

c)

9.8 N

d)

10 N

e)

1 N

30.

Mass is... (select all that apply)

a)

The same as weight

b)

The same as Fg

c)

measured in kg

d)

measured in N

e)

the inertia of an object

31.

An object is speeding up in the negative direction

a)

Balanced Forces

b)

Unbalanced Forces

32.

An object is moving at a constant velocity across the floor

a)

Balanced Forces

b)

Unbalanced Forces

33.

An object has a net force NOT equal to zero

a)

Balanced Forces

b)

Unbalanced Forces

34.

An object is sitting at rest on the floor

a)

Balanced Forces

b)

Unbalanced Forces

35.

An object’s resistance to changes in motion is defined as

a)

Newton's 3rd Law

b)

Acceleration

c)

Inertia

d)

Net Force

36.

If you have two objects experiencing the same net force then, the one with ___________________ will experience a bigger acceleration

a)

more inertia

b)

less inertia

c)

more friction

37.

What is the net force on this object?

a)

12 N left

b)

2 N left

c)

2 N right

d)

0.4 N left

e)

10 N left

38.

What is the acceleration of this object?

a)

12 N left

b)

2 N left

c)

2 m/s/s right

d)

0.4 m/s/s left

e)

10 N m/s/s

39.

What is the meaning of k in the equation Fs = k(^x) (select all that apply)

a)

Force of spring

b)

how strong of a spring you have

c)

the displacement of the spring

d)

spring constant

e)

coefficient of friction

40.

According to Newton's 3rd Law...

a)

Forces are always directed downward

b)

Forces always come in pairs

c)

Forces cause things to stop moving

d)

Forces are always unbalanced

41.

What is the 3rd Law force that pairs with the Force of a table pushing on a box that is sitting on it?

a)

F of earth on box

b)

F of box on earth

c)

F of table on box

d)

F of box on table

e)

F of gravity on box

42.

The acceleration of this object is 10m/s/s right. What is the Net force on this object?

a)

15 N left

b)

30 N right

c)

20 N right

d)

5 N right

e)

35 N right

43.

The acceleration of this object is 10m/s/s right. What is the unknown rightward force on this object?

a)

15 N left

b)

30 N right

c)

20 N right

d)

5 N right

e)

35 N right

44.

Which free body diagram matches?

A box that is already moving to the right is slowing down as it coasts across the rough, horizontal floor

a)

A

b)

B

c)

C

d)

D

e)

E

45.

Which free body diagram matches?

A person is pulling a 5kg box with a rope to the left at a constant speed across a rough floor

a)

A

b)

B

c)

C

d)

D

e)

E

46.

Which free body diagram matches?

A box of unknown weight is on top of a 0.3 m compressed scientific spring of spring constant 100 N/m

a)

A

b)

B

c)

C

d)

D

e)

E

47.

Which free body diagram matches?

A box of sits at rest on a smooth horizontal table

a)

A

b)

B

c)

C

d)

D

e)

E

48.

This is a Free Body Diagram for which situation?

a)

A box is pushed by a person to the left at a constant speed on a rough floor

b)

A box sits a rest on a horizontal floor

c)

A box is pulled by a rope to the left at a constant speed on a rough floor

d)

A box is pushed by a person to the right at a constant speed on a rough floor

e)

A box is slowing down as it moves to the right on a rough floor

49.

This is a Free Body Diagram for a 10kg box moving at constant speed on a rough floor of coefficient of friction 0.2, what is the weight of the box?

a)

10kg

b)

98N

c)

9.8N

d)

0.2N

e)

Unable to determine

50.

This is a Free Body Diagram for a 10kg box moving at constant speed on a rough floor of coefficient of friction 0.2, if Fg is 98N what is the normal force?

a)

10kg

b)

98N

c)

9.8N

d)

0.2N

e)

Unable to determine

51.

This is a Free Body Diagram for a 10kg box moving at constant speed on a rough floor of coefficient of friction 0.2, if the normal force is 98N, what is the friction force, f ?

a)

10kg

b)

98N

c)

9.8N

d)

0.2N

e)

19.6N

52.

This is a Free Body Diagram for a 10kg box moving at constant speed on a rough floor of coefficient of friction 0.2, if the friction force, f, is 19.6N what is the tension force ?

a)

10kg

b)

98N

c)

9.8N

d)

0.2N

e)

19.6N

53.

These horizontal forces are balanced. The vertical forces are balanced. Fa = 100N and Fg = 400N. What is the coefficient of friction?

a)

100

b)

400

c)

40000

d)

4.00

e)

0.25

54.

The spring force is 500N and the displacement of the spring is 0.3333m what is the spring constant?

a)

500 N/m

b)

1500 N/m

c)

166 N/m

d)

0.333 N/m

e)

500.3333 N/m

55.

The spring force is 20N and the spring constant is 100 N/m what is the compression of the spring?

a)

20m

b)

100m

c)

0.20m

d)

2000m

e)

5.00m

56.

The Fg is 49N, what is the mass of the object?

a)

5kg

b)

49N

c)

49kg

d)

9.8kg

e)

480kg

57.

In the graph above, what variable is on the y-axis (vertical axis)

a)

Fg

b)

m

c)

y

d)

x

e)

none of these

58.

In the graph above, what variable is on the x-axis (horizontal axis)

a)

Fg

b)

m

c)

y

d)

x

e)

none of these

59.

In the graph above, what is the physics equation of this graph?

a)

y = mx

b)

y = 9.8x

c)

m = 9.8*Fg

d)

Fg = 9.8*m

e)

none of these

60.

When is a normal force present in a situation?

a)

When you have a Fg

b)

When the weight is >1

c)

When there is friction

d)

When there is a supporting surface

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