Choose the best answer. It does not matter how many questions you miss. What matters is that you learn from any mistakes.
A box is sliding across a floor while experienceing a frictional force between the box and floor. The box is sliding from left to right. What direction is the force due to friction pointing?
A box slides across a rough floor at a constant velocity. What forces act on the box? (The term "rough" is geek-speak implying that friction is present.)
friction, gravity
friction, tension, gravity
friction, normal force, gravity
friction, normal force, net force
If the box is moving to the right, , which way is the frictional force pointing?
to the right,
to the left,
upwards,
A box slides across a perfectly smooth floor at a constant velocity. (The phrase "perfectly smooth" or "smooth" is geek-speak for meaning that the surface is frictionles.) What forces act on the box?
tension, gravity
tension, gravity, normal froce
tension, gravity, normal force, friction
gravity, normal force, friction
A box is being pulled up a rought incline at a constant velocity. What is the direction of friction?
What is the direction of the tension force from the attached rope?
The track is perfectly smooth. What is the direction of the normal force acting on the ball?
What is the direction of the frictional force acting on the box?
What forces act on the ball as it moves around the smooth surfaced loop?
normal, friction, tension
normal, friction
normal, gravity, tension
normal, gravity
What is the direction of the gravitational force acting on the box?
From observations in the text above, what symbol is use to represent a "body?"
small square
small dot
an outline of the body without details
small triangle
From observations about the text above, how are the vectors representing the force acting on the body drawn?
with the vector's tail touching the body
with the vector's tip touching the body
It does not need to touch the body at all.
A car is traveling down a level road to the the right. The car's engine exerts 5000 N of force. It is dragging a sled behind it by a thick cable. The tension in the cable is 1000N. Friction acting on the car has a magnitude of 2000N. Which freebody diagram is scaled correctly?