The object will continue to move with a constant velocity.
answer
An object is moving in the absence of a net force. Which of the following best describes the object's motion?
question
The net force acting on the object is zero.
answer
An object is moving with constant velocity. Which of the following best describes the force(s) acting on the object?
question
The object is moving with a constant acceleration.
answer
A constant net force acts on an object. Which of the following best describes the object's motion?
question
The acceleration of object 1 is twice the acceleration of object 2.
answer
The same net force is applied to two different objects. The second object has twice the mass of the first object. Compare the acceleration of the two objects.
question
the object pulling upward on Earth
answer
An object is at rest on a tabletop. Earth pulls downward on this object with a force equal in magnitude to mg. If this force serves as the action force, what is the reaction force in the action-reaction pair?
question
The force on the truck is equal to the force on the car.
answer
A large truck collides head-on with a small car. The car is severely damaged as a result of the collision. According to Newton's third law, how do the forces acting between the truck and car compare during the collision?
question
For this situation you should draw a free-body diagram for the piano.
answer
Chadwick is pushing a piano across a level floor. The piano can slide across the floor without friction. If Chadwick applies a horizontal force to the piano, what is the piano's acceleration?
Determine the object of interest for the situation described in the problem introduction.
question
(1) gravitational force acting on the piano (piano's weight)
(2) force of the floor on the piano (normal force)
(3) force of Chadwick on the piano
answer
Chadwick is pushing a piano across a level floor. The piano can slide across the floor without friction. If Chadwick applies a horizontal force to the piano, what is the piano's acceleration?
Identify the forces acting on the object of interest. From the list below, select the forces that act on the piano.
question
If you were actually going to solve this problem rather than just draw the free-body diagram, you would need to define the coordinate system. Choose the position of the piano as the origin. In this case it is simplest to let the y axis point vertically upward and the x axis point horizontally to the right, in the direction of the acceleration.
answer
Chadwick is pushing a piano across a level floor. The piano can slide across the floor without friction. If Chadwick applies a horizontal force to the piano, what is the piano's acceleration?
Select the choice that best matches the free-body diagram you have drawn for the piano.
question
In working problems like this one that involve an incline, it is most often easiest to select a coordinate system that is not vertical and horizontal. Instead, choose the x axis so that it is parallel to the incline and choose the y axis so that it is perpendicular to the incline.
answer
Chadwick now needs to push the piano up a ramp and into a moving van. (Figure 2) The ramp is frictionless. Is Chadwick strong enough to push the piano up the ramp alone or must he get help? To solve this problem you should start by drawing a free-body diagram.
Determine the object of interest for this situation.
Now draw the free-body diagram of the piano in this new situation. Follow the same sequence of steps that you followed for the first situation. Again draw your diagram before you look at the choices below.
Haven't found what you need?
Search for quizzes and test answers now
Quizzes.studymoose.com uses cookies. By continuing you agree to our cookie policy
