WorksheetsFinal Review Unit 2-3
Total questions: 25
Worksheet time: 31mins
Name
Class
Date
1.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
2.
Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?
a)
gravity
b)
friction
c)
air
d)
mass
3.
Ted is trying to move a fridge through his house, he gets stuck on a carpet and even though he is pushing the fridge, it is not moving. What force is acting against him?
a)
gravity
b)
friction
c)
air
d)
mass
4.
A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?
a)
b)
c)
d)
5.
A hockey puck glides to the right across the ice at a constant speed.
a)
b)
c)
d)
6.
Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron?
a)
feathers
b)
iron
c)
same
d)
depends on their friction
7.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
8.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law
c)
Newtons 3rd law
d)
Newtons 2nd law
9.
What Newtons law does this picture represent
a)
Newtons 2nd law
b)
Law of gravity
c)
Newtons 1st law
d)
Newtons 5th law
10.
An object is resting motionless on a surface. According to Newton's 1st Law, the object will only start to move if
a)
the net forces on the object equal zero
b)
an unbalanced force is applied to the object
c)
the upward force of the object is equal to its acceleration
d)
two forces that are equal and opposite are applied to the object
11.
As the wheels of a train push down on the track, the track pushes back against the wheels. Which of Newton's laws is used to explain these forces.
a)
An object at rest tends to stay at rest unless acted upon by an unbalanced force.
b)
The net force of an object is its mass times its acceleration.
c)
For every action, there is an equal and opposite reaction.
d)
Any 2 objects exert a gravitational force of attraction on each other.
12.
The impulse is ______ the change in momentum
a)
greater than
b)
equal to
c)
less than
d)
always double
13.
The momentum of an object depends upon the object's ___________&_____________.
a)
size and shape
b)
mass and speed
c)
mass and velocity
d)
mass and energy
14.
Determine the momentum of 1000-kg car moving northward at 20 m/s.
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
15.
If two objects have the same mass, then the faster moving object has ____________ momentum.
a)
more
b)
less
c)
the same
16.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
17.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to
b)
less than
c)
more than
d)
It depends on the type of collision
18.
The amount of friction depends on the weight of the objects pressing together.
a)
True
b)
False
19.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
20.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity
21.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
22.
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
23.
When mass is 10 kg, acceleration is 2 m/s/s, what is force?
F = ma
F = ma
a)
5 N
b)
20 N
c)
8 N
d)
12 N
24.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3
d)
Cart 4
25.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
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