Physics Unit 3 Test: Forces (True/False)
Consider Newton's first law of motion to determine if the statement is true. It would take an unbalanced force to keep an object in motion at a constant velocity.
False
Is the following always true of an object that is at equilibrium? The object is at rest.
False
Is the following always true of an object that is at equilibrium? The object is moving and moving with a constant velocity.
False
Is the following always true of an object that is at equilibrium? All the forces acting upon the object are equal.
False
Is the following statement true of the concept of force? Bubba approaches Billie and gives him a swift shove. Timid little Billie keeps his hands in his pocket during this interaction. Subsequently, while Bubba places a force upon Billie, Billie does not place a force upon Bubba.
False
Is the following statement true of the concept of force? Forces always cause objects to move.
False
Is the following statement true of the concept of force? A quarterback throws a football down field. Once thrown, the force from the quarterback persists upon the ball to cause it to continue on its upward trajectory towards its peak.
False
Is the following statement true of the concept of force? A sled slides down the hill and reaches the bottom where it gradually slows to a stop. Once on the level ground, the force of the hill persists upon the sled to allow it to continue its forward motion.
False
Is the following statement true of the concept of force? Spring and tension forces are examples of field forces.
False
Is the following statement true of the concept of force? Force can be measured in kilograms or Newtons depending upon the system of measurement (metric or otherwise).
False
Is the following true about the quantity mass? An object would have more mass on Mount Everest than the same object in the middle of Lake Michigan.
False
Is the following true about the quantity mass? The mass of an object can be measured in pounds.
False
Is the following true about the quantity mass? The mass of an object is dependent upon the value of the acceleration of gravity.
False
Is the following true about the quantity mass? The mass of an object is variable and dependent upon its location.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? A free-falling object experiences a balance of forces.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? Balanced forces cause stationary objects to remain at rest and moving objects to come to rest.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? If an object is accelerating at a constant rate of acceleration, then the forces acting upon the object are balanced.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? If an object is moving with a constant speed in a circle, then the forces acting upon the object are balanced.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? It is NOT possible for just three forces to be acting upon an object and they still balance each other.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? It would take an unbalanced force to keep an object in motion.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? Unbalanced forces cause objects to move.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? A balance of forces is demonstrated by an object which is slowing to a stop.
False
Is the following true of an object that experiences balanced (or unbalanced forces)? If a person is moving to the right, then the forces acting upon it are NOT balanced.
False
Is the following true of inertia? An object would not have any inertia in a gravity-free environment (if there is such a place).
False
Is the following true of inertia? Fast-moving objects have more inertia than slow-moving objects.
False
Is the following true of inertia? In a gravity-free environment (should there be one), a person with a lot of inertia would have the same ability to make a turn as a person with a small amount of inertia.
False
Is the following true of inertia? Inertia is a force which brings all objects to a rest position.
False
Is the following true of inertia? Inertia is a force which keeps stationary objects at rest and moving objects in motion at constant velocity.
False
Is the following true of inertia? Inertia is a force.
False
Is the following true of inertia? Inertia is the tendency of all objects to resist motion and ultimately stop.
False
Which of the following are never true of an object that is at equilibrium? Include all that apply. All the forces acting upon the object are equal.
False
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is at rest.
False
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is falling and has reached its terminal velocity.
False
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is moving and moving with a constant velocity.
False
Consider Newton's first law of motion to determine if the statement is true. It would take an unbalanced force to cause an object to accelerate from rest.
True
Consider Newton's first law of motion to determine if the statement is true. Newton's first law of motion is applicable to both moving and nonmoving objects.
True
Is the following always true of an object that is at equilibrium? All the forces acting upon an object are balanced.
True
Is the following always true of an object that is at equilibrium? The object has an acceleration of zero.
True
Is the following always true of an object that is at equilibrium? The sum of all the forces is 0 N.
True
Is the following always true of an object that is at equilibrium? There is no change in the object's velocity.
True
Is the following statement true of the concept of force? A contact force results from the physical contact between two objects.
True
Is the following statement true of the concept of force? A force is a push or pull exerted upon an object which results from the interaction of that object with its environment.
True
Is the following statement true of the concept of force? A force is a vector quantity; there is always a direction associated with it.
True
Is the following statement true of the concept of force? An object can experience two or more forces and not accelerate.
True
Is the following true about the quantity mass? If all other variables are equal, then an object with a greater mass would have a more difficult time accelerating.
True
Is the following true about the quantity mass? If all other variables are equal, then it would require less exerted force to stop a less massive object than to stop a more massive object.
True
Is the following true about the quantity mass? Mass depends on how much stuff is present in an object.
True
Is the following true about the quantity mass? People in Weight Watcher's are really concerned about their mass (they're mass watchers).
True
Is the following true about the quantity mass? The mass of an object is mathematically related to the weight of the object.
True
Is the following true about the quantity mass? The standard metric unit of mass is the kilogram.
True
Is the following true of inertia? A more massive object has more inertia than a less massive object.
True
Is the following true of inertia? All objects have inertia.
True
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is accelerating.
True
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is in free-fall.
True
Which of the following are never true of an object that is at equilibrium? Include all that apply. The object is moving in a circle at constant speed.
True
Which of the following are never true of an object that is at equilibrium? Include all that apply. There is a net force acting upon the object.
True
Consider Newton's Second Law to determine if the following statement is true? A 10-kg object slows down from 24 m/s to a final velocity of 9 m/s in 3 seconds. The magnitude of the net force acting upon the object is 80 N.
False
Consider Newton's Second Law to determine if the following statement is true? A 2-kg object accelerates from rest to a final velocity of 6 m/s in 3 seconds. The magnitude of the net force acting upon the object is 12 N.
False
Consider Newton's Second Law to determine if the following statement is true? Accelerating objects are either slowing down or speeding up.
False
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the mass of the object is increased by a factor of 2, then the new acceleration would be 16 m/s/s.
False
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2 and the mass of the object is decreased by a factor of 2, then the two factors would offset each other and the acceleration would still be 8 m/s/s.
False
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2, then the new acceleration would be 10 m/s/s.
False
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 3, then the new acceleration would be 11 m/s/s.
False
Consider Newton's Second Law to determine if the following statement is true? The acceleration of an object is directly dependent upon its mass and inversely dependent upon its net force.
False
Consider Newton's first law of motion to determine if the statement is true. If a football is moving upwards and rightwards towards the peak of its trajectory, then there are both rightwards and upwards forces acting upon it.
False
Consider Newton's first law of motion to determine if the statement is true. It would take an unbalanced force to keep an object in motion.
False
Consider Newton's first law of motion to determine if the statement is true. A pendulum bob is set into its usual back-and-forth periodic motion. After some time (perhaps 10 minutes), the pendulum bob comes to a rest position. This is best explained by the idea of inertia - all objects eventually resist motion.
False
Consider Newton's first law of motion to determine if the statement is true. If a 3-kg rock is thrown at a speed of 2 m/s in a gravity-free environment (presuming one could be found), then an unbalanced force of 6 N would be required to keep the rock moving at a constant speed.
False
Consider Newton's first law of motion to determine if the statement is true. If an object is at rest, then there are no forces acting upon the object.
False
Consider Newton's first law of motion to determine if the statement is true. It is the natural tendency of all objects to eventually come to a rest position.
False
Is the following statement true of the concept of force? A field force results from the action of two objects which are positioned some distance away.
Mostly True
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 4 and the mass of the object is increased by a factor of 2, then the new acceleration would be 16 m/s/s.
True
Consider Newton's Second Law to determine if the following statement is true? If an object is accelerating to the right, the net force on the object must be directed towards the right.
True
Consider Newton's Second Law to determine if the following statement is true? If an object is moving to the right and slowing down, then the net force on the object is directed towards the left.
True
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the mass of the object is increased by a factor of 4, then the new acceleration would be 2 m/s/s.
True
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is decreased by a factor of 2 and the mass of the object is increased by a factor of 4, then the new acceleration would be 1 m/s/s.
True
Consider Newton's Second Law to determine if the following statement is true? An object has an acceleration of 8 m/s/s. If the net force acting upon the object is increased by a factor of 2 and the mass of the object is increased by a factor of 4, then the new acceleration would be 4 m/s/s.
True