WorksheetsForces Test Review
Total questions: 41
Worksheet time: 24mins
According to Newton's 2nd Law, if you increase the force applied to an object.... *
It accelerates more
You get more inertia
It doesn't move
It's gravity increases
What is Newton's 3rd Law of Motion?
Action/Reaction
Law of Inertia
F = M x A
Law of Universal Gravitation
Look at the picture below. If the rope does not move to either side, the forces acting upon it are .... *
Balanced
Unbalanced
Weak
Displaced
16. The momentum of an object depends on the object's ______________ & _____________ . *
Size & Shape
Mass & Velocity
Mass & Energy
Calculate the momentum of a 10kg dog running at 20m/s. *
20kg*m/s
200kg*m/s
2000kg*m/s
200N
An object will have a tendency to resist change. This property is proportionate to the object's mass.
Inertia
Air Resistance
Net Force
Momentum
What is the unit for momentum?
kg
m/s2
kg*m/s
meters
What is the momentum of a 15kg girl moving at a speed of 1.3m/s?
16 kg*m/s
20 kg
20 m/s
20 kg*m/s
If a person is moving with a velocity of 35m/s and has a momentum of 350 kg*m/s, what is the person's mass?
10 m/s
10 kg*m/s
10 kg
10 s
What is the equation for momentum
p=mv
s=d/t
kg*m/s
F=ma
Which of the following has the greatest momentum?
a scurrying cockroach
a parked semi-truck
more information is needed
A boulder resting on a mountain top.
Not enough information to determine
Objects with greater _________ also have greater inertia.
speed
mass
force
friction
Which of these has the MOST inertia?
A squirrel has a weight of 4.9 N. What is his Mass if he is running on the Ground?
4.9 kg
9.8 N/kg
0.5 kg
5.0 kg
You fly to a new planet and research if life can exist there. Your mass is 100 kg and on earth your weight is 980N. You discover that your weight on this new planet is 1500N. What does this tell you about this planet?
You have a higher mass on this planet.
This planet has less gravity than earth.
This planet has more gravity than earth.
This planet cannot support life.
What are the units for Weight?
Kg
N
N/kg
Joules
Find the weight of a 20 kg object
200N
196kg
196N
20kg
Which are the SI units for acceleration?
N
m/s
m/s squared
kg*m/s
Objects falling through the air are slowed by the upward force of
A cup of coffee sitting on a table describes which Law of Motion?
Newton's 1st Law (Inertia)
Newton's 2nd Law (F=ma)
Newton's 3rd Law (Action/Reaction)
If you apply the same force on different objects, which will have the LEAST acceleration?
they would all have the same acceleration
the smallest one
the one with the least mass
the one with the greatest mass
What is the weight of a 0.456 kg object?
457g
0.447kg
4.47N
.447N
What statement is true?
Mass never changes. Weight does.
Weight never changes. Mass does.
Both mass and weight change because they are affected by gravity.
Neither mass nor weight change. They are always the same.
The size of the gravitational force between two objects depend on their _______.
Frictional forces
Masses and distance between them
Inertia
Speed and Direction
The acceleration of objects falling on Earth due to gravity is
9.8 m/s
9.8 m/s2
9.8 g/mL
8.9 g/m/m
A girl drops a bowling ball and a feather from a cliff. Ignoring air resistance, what should she observe?
The bowling ball falls faster than the feather
The bowling ball falls slower than the feather
They both fall at the same rate.
The feather remains suspended and doesn't fall.
What is Newton's 1st Law of Motion? *
Every Action has an equal and opposite Reaction
An object in motion, stays in motion. An object at rest, stays at rest...unless acted upon by a force.
F = MA
p=mv
A __________ is a push or a pull on an object.
Newton
Force
Momentum
The best definition of momentum is ...
Related to the amount of force needed to change an object's motion.
Tendency of an object to resist change in motion.
The change in the velocity of an object.
9. Look at the picture below. Which of Newton's Laws is BEST represented? *
1st Law/Inertia: an object in motion will stay in motion.
2nd Law: An object will accelerate in the direction of a net force.
3rd Law: Every action has an equal and opposite reaction.
Terminal velocity.
Select the force arrows that apply: (more than one!)
Find the statement that best describes the picture:
Air resistance (drag) is less than the force of gravity
Velocity is increasing
Terminal velocity: falling at a constant speed
Acceleration of 9.8m/s squared
The force of gravity is greater than the force of the air resistance (drag)
In a collision, a 12.0 kg green toy car moving at 4 m/s transfers all of it's momentum to a 6.0 kg blue toy car. What is the velocity of the blue car after the collision?
4 m/s
4.5 m/s
8 m/s
8.5 m/s
If the box pictured has a mass of 25 kg, what will it's acceleration be?
1.6 m/s
16 m/s squared
1.6N
1.6 m/s squared
