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Net Force

Total questions: 56

Worksheet time: 1hrs 6mins

Name
Class
Date
1.

What is the net force

a)

10 N to the right

b)

30 N to the right

c)

10 N to the left

d)

30 N to the left

2.

What is the net force?

a)

38 N to the left

b)

38 N to the right

c)

2 N to the left

d)

2N to the right

3.
Students are playing tug-of-war. If group B pulls the rope to the right with a force of 400 N and group A pulls the rope to the left with a force of 250 N, what will happen to the ribbon in the middle of the rope?
a)
The ribbon will move to the left and group A will win the tug-of-war.
b)
The ribbon will move to the right and group B will win the tug-of-war.
4.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
5.

What is the unit to MEASURE force?

a)

Kilogram

b)

Meter

c)

Pounds

d)

Newton

6.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
7.
If you have balanced forces on a ball what happens
a)
It STAYS the SAME
b)
CHANGES its MOTION
c)
:(
d)
:)
8.
Forces that have a force of Zero (0).
a)
Balanced force
b)
Unbalanced force
9.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
10.
What is the FORCE? 
a)
5 N
b)
10 N
c)
400 N
d)
0 N
11.
Which one is balanced?
a)
top
b)
bottom
c)
both
12.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
13.
What is the net force?
a)
5 N
b)
45 N to the left
c)
5 N to the right
d)
45 N to the right
14.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
15.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
16.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
17.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
18.

without friction, an object in motion would never stop

a)

true

b)

false

19.

you can walk because there is friction between your __________ and ______________

a)

ground and air

b)

feet and ground

c)

feet and air

d)

air and ground

20.
 What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
21.
What are 2 factors that determine the amount of friction between 2 objects?
a)
Force and roughness between surfaces
b)
hills and valleys and how smooth or rough the surface is
c)
Amount of force and amount of surface the comes in contact
d)
The force and the weight exerted on the surfaces
22.

In which of these examples is friction helpful:

a)

soil erosion

b)

engine parts wearing out

c)

breaks stopping a car

d)

holes developing in your socks

23.

Haley is standing outside in the cold weather waiting for her bus. How can she create heat with her hands?

a)

Wave her hands in the air

b)

Rub her hands together

c)

Cover her hands in a towel

d)

Wash her hands with water

24.

Two objects will create some heat if what is true?

a)

The objects are far apart.

b)

. The objects are both very heavy.

c)

The objects are made of different mate

d)

The objects rub against each other

25.

Right after a nail is pulled from a piece of wood, it feels hot. What makes the heat?

a)

The wood rubs against the nail

b)

The nail is made of iron, a kind of metal.

c)

The nail was heated by the air around it.

d)

The wood is made from a tree, a living thing.

26.

Micah is riding his bike. He stops quickly and notices the tires feel very hot. Why are the tires hot?

a)

They are filled with ai

b)

They moved in a circle.

c)

They are very smooth.

d)

They rubbed against the road.

27.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
28.

Which would create more friction?

a)

carpet

b)

metal

29.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
30.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
31.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
32.

Which of these materials do you predict would have the MOST amount of friction

a)

Metal

b)

Tile

c)

Sand Paper

d)

Denim

33.
A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate
a)
surface area
b)
air resistance
c)
descent velocity
d)
gravity 
34.

TRUE or FALSE if you push a box across a surface like Ice with no friction, it will NEVER stop

a)

TRUE, as long as it doesn't run into something it will keep going and going and going

b)

FALSE, it will stop very quickly

35.
On which surface will a toy car travel the furthest?
a)
Carpet
b)
Polished Wood
c)
Ice
36.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
37.

What helps Earth act like a gigantic magnet?

a)

A. its iron core

b)

B. its mountains

c)

C. its atmosphere

d)

D. its oceans

38.

What kind of objects will a magnet attract?

a)

A. plastic objects

b)

B. lead objects

c)

C. aluminum objects

d)

D. iron objects

39.

What happens when two magnets repel each other?

a)

A. Their magnetic fields get bigger.

b)

B. They come closer together.

c)

C. They push away from each other.

d)

D. They point to the North Pole.

40.

What happens when the OPPOSITE poles of two magnets come near each other?

a)

A. The magnets push away.

b)

B. The magnets pull together.

c)

C. The magnets get bigger.

d)

D. The magnets disappear.

41.

What are the two poles on a magnet?

a)

A. north and south

b)

B. east and west

c)

C. north and west

d)

D. south and east

42.

Which object will a magnet attract?

a)

An Eraser

b)

A Paper

c)

A Nail

d)

A Water Bottle

43.
What is the SI unit used to measure force? 
a)
pounds 
b)
grams 
c)
newtons 
d)
friction
44.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
45.
Is the force of gravity on the diver a push or a pull?
a)
push
b)
pull
46.

If I drop a large rock and a small rock from the same height at the same time, which one will hit the ground first?

a)

the large rock

b)

the small rock

c)

both will hit at the same time

47.

What keeps the planets in orbit around the sun?

a)

gravity

b)

friction

c)

magic

d)

distance

48.

Gravity is a _____ that _____

2 objects towards one another.

a)

thing

reaches

b)

energy

pushes

c)

force

pulls

d)

weight

takes

49.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
50.
Find the net force: 15 N to the right, and another 15 newtons to the right.
a)
0 N Right
b)
0 N Left
c)
30 N Left
d)
30 N Right
51.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced 
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
52.
What is force?
a)
A push exerted on an object
b)
A push or pull exerted on an object
c)
A pull exerted on an object
d)
Nothing
53.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
54.
The force that pulls things toward earth.
a)
Speed
b)
Gravity
55.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 
a)
velocity
b)
gravity
c)
net force
d)
distance
56.
Is it BALANCED? 
a)
Yes
b)
No

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