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Newton's Laws, Free Body Diagrams

Total questions: 29

Worksheet time: 58mins

Name
Class
Date
1.
The gravitational force exerted on an object would be represented by which vector?
a)
↑
b)
→
c)
↓
d)
←
2.
The free body diagram displayed shows
a)
A downward gravitational force of 600N
b)
A downward gravitational force of 700N
c)
A downward gravitational force of 500N
d)
A downward gravitational force of 400N
3.
Force depends on
a)
Force
b)
mass
c)
acceleration
d)
mass and acceleration 
4.
Name the missing force...
a)
frictional force
b)
weight force
c)
thrust
d)
buoyant force
5.
Name the missing force....
a)
weight force
b)
normal force
c)
frictional force
d)
tension force
6.
What is the magnitude (size) and direction of the net force?
a)
10 N to the Right
b)
10 N to the Left
c)
0 N
d)
8 N to the Left
7.
What is the magnitude (size) and direction of the net force?
a)
21 N to the Left
b)
3 N to the Left
c)
21 N to the Right
d)
3 N to the Right
8.
An object accelerates 5 m/s2 when a force of 20 newtons is applied to it. What is the mass of the object?
a)
4 Kg
b)
20 Kg
c)
0.5 Kg
d)
2 Kg
9.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gravitational acceleration
c)
inertia
d)
all of these
10.
What makes a rolling ball stop moving?
a)
gravity
b)
friction
c)
a balanced force
11.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal

b)

abnormal

c)

static

d)

inertia

12.

The force exerted by ropes and chains is called

a)

tension

b)

normal

c)

elastic

d)

mechanical

13.

The best way to label a push or a pull on a diagram is to use

a)
b)
c)
d)
14.

What is the appropriate way to indicate Gravity in a diagram?

a)
b)
c)
d)
15.

Which diagram best shows person pushing a couch (accelerating) across the floor?

a)
b)
c)
d)
16.

Which of the following is true about this free-body diagram?

a)

the forces are are balanced

b)

the object is free-falling

c)

the object is moving upward

d)

the forces are unbalanced

17.
Match description with free-body diagram.
a)
A book is at rest on a tabletop.
b)
A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.
c)
An egg is free-falling from a nest in a tree. Neglect air resistance.
d)
A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.
18.
Match description with free-body diagram.
a)
A book is at rest on a tabletop.
b)
A gymnast holding onto a bar, is suspended motionless in mid-air. The bar is supported by two ropes that attach to the ceiling. Diagram the forces acting on the combination of gymnast and bar.
c)
An egg is free-falling from a nest in a tree. Neglect air resistance.
d)
A flying squirrel is gliding (no wing flaps) from a tree to the ground at constant velocity. Consider air resistance.
19.
Match description with free-body diagram.
a)
A force is applied to the right to drag a sled across loosely packed snow with a rightward acceleration. Neglect air resistance.
b)
A football is moving upwards towards its peak after having been booted by the punter. Neglect air resistance.
c)
A car is coasting to the right and slowing down. Neglect air resistance. 
d)
A skydiver is descending with a constant velocity. Consider air resistance.
20.

What is the net force on the block?

a)

balanced, the net force is 0

b)

unbalanced, the net force is 5 N up

c)

unbalanced, the net force is 5 N down

d)

Unbalanced, the net force is 5 N sideways

21.

What is the net force on the cart?

a)

balanced, the net force is 0

b)

unbalanced, the net force is 50 N up

c)

unbalanced, the net force is 50 N left

d)

Unbalanced, the net force is 50 N right

22.

You push backwards on the Earth. What is the reaction?

a)

The Earth pushes forward on you

b)

You move

c)

The Earth pushes up on you

d)

Gravity pulls you down

23.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
24.
You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.
a)
20N 
b)
40N 
c)
10N 
d)
70N
25.
A 70 kg acrobat hangs from a bar, motionless, that is attached to the ceiling by two ropes. Find the tension in each rope.
a)
70 N
b)
686.7 N
c)
343.35 kg
d)
343.35 N
26.

A 80 kg skydiver is free falling at a constant velocity of 19 m/s. What is the net (total) force acting on her?

a)

1,520 N

b)

0 N

c)

4.21 N

d)

Not enough information to answer

27.

A boat moving away from you as you jump out of it demonstrates which of Newton's Laws?

a)

Newton's First Law

b)

Newtons's Second Law

c)

Newton's Third Law

d)

Newton's Law of Gravity

28.

There are two cars involved in a head-on collision. One car has twice the mass of the other. The car with more mass hits the car with smaller mass with __________ force.

a)

No

b)

Less

c)

Equal

d)

More

29.

What is the unit of force?

a)

Joule (J)

b)

Watt (W)

c)

Newton (N)

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