Newton's Second Law
What causes an acceleration?
What is a non-zero net force?
What is 1kgm/s^2 equivalent to?
What is a Newton?
What does a free body diagram represent?
What are the forces exerted on an object?
What is the tendency of an object to maintain its state of motion?
What is inertia?
A change in the gravitational force acting on an object will affect the object’s
What is weight?
If a nonzero net force is acting on an object, then the object is definitely
What is accelerating?
A measure of the quantity of matter is
What is mass?
The length of a force vector represents the
What is the magnitude of the force?
A car traveling at constant velocity is in a state of __________?
What is equilibrium?
What are the units of the coefficient of friction?
What is it has none?
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/s2
What are the two symbols for net force?
What are Fnet and ΣF?
A car is being pulled by a towing cable. Will the force from the cable or the force of friction be larger in magnitude?
What is the force from the towing cable?
Which are simultaneous equal but opposite forces resulting from the interaction of two objects?
What are action-reaction pairs?
There are six books in a stack, and each book weighs 5 N. The coefficient of static friction between the books is 0.2. With what horizontal force must one push to start sliding the top five books off the bottom one?
What is 5N?
A sled traveling at a speed of 3.0 m/s slows to a stop 4.0 m from the point where its passenger rolled off.
What is the magnitude of the horizontal net force that slows the 110 N sled? (Assume ag = 9.81 m/s2 .)
What is 13N?
A single force acts on an object. The components of this force act along the +x-axis and the –y-axis. The single force that will bring the object into equilibrium has components that act along the
What is the -x axis and +y axis?
A free-body diagram of a ball falling in the presence of air resistance would show
What is a downward arrow representing the force of gravity and an upward arrow representing the force of air resistance
A leaf falls from a tree and lands on the sidewalk. Identify an action-reaction pair in this situation.
What is the leaf exerts a force on the sidewalk; the sidewalk exerts a force on the leaf.
A waitperson carrying a tray with a platter on it tips the tray at an angle of 12° below the horizontal. If the gravitational force on the platter is 5.0 N, what is the magnitude of the force parallel to the tray that tends to cause the platter to slide down the tray? (Disregard friction.)
What is 1N?
An airplane with a mass of 1.20 × 104 kg tows a glider with a mass of 0.60 × 104 kg. If the airplane propellers provide a net forward thrust of 3.60 × 104 N, what is the acceleration of the glider? (Disregard friction.)
What is 2m/s2?
Two perpendicular forces, one of 45.0 N directed upward and the other of 60.0 N directed to the right, act simultaneously on an object with a mass of 35.0 kg. What is the magnitude of the resultant acceleration of the object?
What is 2.14m/s2?
A late traveler rushes to catch a plane, pulling a suitcase with a force directed 30.0° above the horizontal. If the horizontal component of the force on the suitcase is 60.6 N, what is the force exerted on the handle?
What is 70.0N?
A car goes forward along a level road at constant velocity. The additional force needed to bring the car into equilibrium is
What is none?
A sled weighing 1.0 × 102 N is held in place on a frictionless 20.0° slope by a rope attached to a stake at the top. The rope is parallel to the slope. What is the normal force of the slope acting on the sled?
What is 94N?