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WorksheetsNewton's Law of Motion (8.6 C)
Total questions: 30
Worksheet time: 15mins
According to Newton's Third Law of Motion, what determines the type of reaction that will take place in response to an action?
the acceleration in the action
the mass of the object
the size and direction of the force exerted on the object
the inertia of an object
When calculating Newton's Second Law of Motion, what is the resulting unit of measurement called?
newton
velocity
speed
motion
What three factors are used to express Newton's Second Law of Motion?
speed, distance, and time
acceleration, velocity, and speed
force, mass, and acceleration
force, velocity, and acceleration
An object that is slowing down is being acted on
by a net force in the direction of its motion.
forces that are balanced
by at least three forces.
by a net force in the direction opposite of motion.
According to Newton's Second Law of Motion, a force of 500 N can cause a 10-kg object to accelerate at a rate of 50 m/s2. What will happen if the mass of the object is doubled?
The acceleration will be doubled.
The acceleration will remain unchanged.
The acceleration will be cut in half.
The object will move at a greater speed.
A bicycle traveling at a speed of 5 m/s slows down to 2 m/s over the span of 6 seconds. What is the deceleration of the bicycle?
0.5 m/s2
−0.5 m/s2
2 m/s2
−2 m/s2
If an object at rest is being acted on by forces that are balanced, what will happen as a result?
It will fall to the floor.
It will begin moving in a circle.
It will begin moving at a constant speed.
It will stay at rest.
The reference point in this description of motion is
the top of the hill.
the total time the ball rolled.
the total distance the ball rolled.
the bottom of the hill.
Is a book sitting on a table an example of Newton's Third Law of Motion? Explain.
Yes, because objects at rest tend to stay at rest
Yes, because the action is the downward pull of gravity on the book, and the reaction is the upward push of the table, which holds the book in place.
No. This is not an example of Newton's Third Law of Motion.
Yes, because F = ma.
Safety restraints are needed in vehicles to stop the forward motion of the driver and passengers when the vehicle comes to a sudden stop. What explains this?
Acceleration
Gravity
Inertia
Magnetism
Which of the following is used to determine whether motion is taking place?
frame of reference
acceleration
speed
scalars
Why is a car parked on a steep hill an example of Newton's Third Law of Motion?
The inertia of the car keeps it from rolling down the hill.
Gravity is a force that pulls down on the car and friction is a force that acts against gravity; therefore it is action-reaction based
Gravity acting on the car can produce a great amount of acceleration.
An object at rest tends to stay at rest.
A car's seatbelts are needed to
keep the forces on the passengers balanced.
exert a force that changes the forward motion of passengers.
increase the passenger's inertia.
keep all forces from acting on the passengers.
What property determines how much inertia an object has?
texture
boiling point
color
mass
According to Newton's Second Law of Motion, how would increasing the mass of an object affect the amount of force needed to accelerate it at a given rate?
Less force will be needed.
The same amount of force could be used to accelerate an object of greater mass.
The object of greater mass cannot be moved.
More force is needed to accelerate the object having a greater mass.
If the canoe slows down, you know that
the forces acting on it are unbalanced.
there are no forces acting on it.
the forces acting on it are equal and opposite.
only one force is acting on it.
When a space shuttle blasts off from its launching pad, the rockets expel exhaust at a very high velocity. This produces an action force, according to Newton's Third Law of Motion. What is the reaction force?
The rocket remains stationary.
The shuttle will lift off the pad as a reaction due to the action of the exhaust gases leaving the rockets.
The ground below the pad will cave in.
The shuttle will not react to the exhaust being expelled.
Alex wants his friends to meet him, so he needs to tell them his location. Which gives the most complete description of his location?
25 meters away from the library
west of the library
25 meters to the west
25 meters west of the library
When an object is pushed or pulled, what is this action called?
velocity
acceleration
speed
force
How much force is needed to accelerate a truck having a mass of 1,000 kg to 5 m/sec2?
1005 newtons (N)
200 newtons (N)
5,000 newtons (N)
500 newtons (N)
The illustration shows a car that is parked. A second car approaches the parked car from the south and strikes the parked car at point X. The force of the second car striking the first will —
have no effect on the parked car
cause the parked car to move toward the south
push the parked car in a northern direction
cause the moving car to continue traveling north at a higher speed
Newton's Third Law of Motion states that for every action there is an equal and opposite
motion.
acceleration.
reaction.
inertia.
Which of these diagrams is a good illustration of the law of force and acceleration?
Diagram A
Diagram B
Diagram C
Diagram D
What unit of measurement is used to measure force?
mass
kilometer
meters/s2
newton
If a moped has a mass of 100 kg, how much force is needed to accelerate the moped at a rate of 6 m/s2?
106 N
600 N
94 N
6,000 N
Which of the following is not used in a complete description of an object's motion?
force
position
direction
speed
A bag of groceries is sitting on the seat of a moving car. What will happen to the bag of groceries if the driver of the car applies the brakes very quickly?
The bag of groceries will remain at rest.
A force will push the bag of groceries toward the back of the seat.
Friction and gravity will pull the bag of groceries down into the seat.
The bag of groceries will slide forward off the seat as a result of its inertia.
Imagine you are riding in a car when the driver has to brake suddenly. Your body is thrown forward and stopped by the safety belt. Which of the following best explains why this happens?
Inertia
Speed
Acceleration
Balanced forces
Which of the following is being acted on by an unbalanced force?
book at rest on a library shelf
tennis ball traveling at a constant velocity
toy car rolling to a stop at the bottom of a ramp
baseball sitting on the ground
Which of the following responses best defines Newton's Third Law of Motion?
An unbalanced force acting on an object is equal to the mass of the object multiplied by its acceleration.
For every action there is an equal and opposite reaction.
An object in motion tends to stay in motion and an object at rest tends to stay at rest.
The rate of change of velocity of an object in a given period of time is directly related to the mass of the object.
