WorksheetsNewton's Laws
Total questions: 25
Worksheet time: 13mins
True/False: When no net force is applied to a moving object, it still comes to rest because of its inertia.
True
False
True/False: When an object is stationary, all of the forces acting on it are balanced.
True
False
Which of the following statements does not describe force?
Force causes objects to start moving.
Force causes objects to move faster.
Force causes objects to stop moving.
Force causes objects at rest to remain stationary.
Forces that cancel each other out are called ____ forces.
inactivated
unbalanced
null
balanced
Newton's 1st Law of Motion states that ____.
when a force is applied on an object, there is an equal force applied by the object in the opposite direction
for every action, there is an equal but opposite reaction
an object will remain at rest or keep moving with a constant velocity unless a force acts on it
acceleration is calculated by dividing the force exerted on an object by the mass of the object
____ is a force that resists motion between two surfaces that are in contact.
Gravity
Inertia
Friction
Acceleration
When balanced forces act on an object, the net force is ____.
negative
not enough information
zero
positive
What causes a falling skydiver to slow down after the parachute opens?
gravity
loss of inertia
reference motion
air resistance
A(n) ____ is a push or pull.
velocity
force
inertia
motion
The ____ is the combination of all the forces acting on an object.
net force
inertia
direction of motion
mass
When unbalanced forces act on an object, ____.
the object accelerates
the net force is zero
the object stays at rest
friction becomes greater than the net force
Which of the following is the tendency of an object to maintain its state of motion?
inertia
force
velocity
acceleration
If the net force acting on an object is NOT zero, then the object is definitely
at rest.
gaining mass.
being accelerated.
losing mass.
Fred spends most Sunday afternoons at rest on the sofa, watching pro football games and consuming large quantities of food. What effect (if any) does this practice have upon his inertia?
It will increase because his mass will increase.
It will decrease because he isn't moving so inertia doesn't need to work as hard.
None. Inertia is what keeps an object from changing direction and he isn't moving.
A 2-kg object is moving horizontally with a speed of 4 m/s. How much net force is required to keep the object moving at this speed and in this direction? Think carefully!
0 N
8 N
2 N
4 N
The free-body diagram shown represents a car being pulled by a towing cable. In the diagram, which of the following is the gravitational force acting on the car?
5,800 N
775 N
14,700 N
13,690 N
The free-body diagram shown represents a car being pulled by a towing cable from behind. In the diagram, the 5,800 N force is
the gravitational force acting on the car.
The backward force the road exerts on the car.
The upward force the road exerts on the car.
the force exerted by the towing cable on the car.
Which statement about the acceleration of an object is correct?
(Hint: directly proportional = "one goes up, so does the other"
inversely proportional = "one goes up, other goes down")
The acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to the object's mass.
The acceleration of an object is directly proportional to the net force acting on the object and directly proportional to the object's mass.
The acceleration of an object is inversely proportional to the net force acting on the object and inversely proportional to the object's mass.
The acceleration of an object is inversely proportional to the net force acting on the object and directly proportional to the object's mass.
According to Newton's second law, when the same force is applied to two objects of different masses, the object with greater mass will experience a(n) ____ acceleration, and the object with less mass will experience a(n) ____ acceleration.
great; even greater
smaller; greater
greater; smaller
small; even smaller
The statement by Newton that for every action there is an equal but opposite reaction is which of his laws of motion?
1st
2nd
3rd
4th
A hammer drives a nail into a piece of wood. Identify an action-reaction pair in this situation.
The nail exerts a force on the hammer, the hammer exerts a force on the wood.
The hammer exerts a force on the nail; the wood exerts a force on the nail.
The hammer exerts a force on the nail; the nail exerts a force on the hammer.
The hammer exerts a force on the nail, the nail exerts a force on the wood.
A free-body diagram of a ball falling in the presence of air resistance would show
only a downward arrow to represent the force of air resistance.
only a downward arrow to represent the force of gravity.
a downward arrow to represent the force of gravity and an upward arrow to represent the force of air resistance.
an upward arrow to represent the force of gravity and a downward arrow to represent the force of air resistance.
A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter's acceleration?
0.22 m/s/s
0.69 m/s/s
3.2 m/s/s
4.6 m/s/s
Newton's third law of motion involves the interactions of
one object and one force
one object and two forces
two objects and one force
two objects and two forces
A girl pulls on a 10-kg wagon with a force of 20N. What is the wagon's acceleration?
0.5 m/s/s
2.0 m/s/s
10 m/s/s
20 m/s/s
