Vocabulary
A push or pull
What is a force?
Forces that lead to constant motion in an object
What is balanced forces?
The Law of Inertia
What is Newton's first law of motion?
The ability to do work
What is energy?
force x distance
What is the formula for work?
The unit of measurement for forces
What is a newton?
Forces that lead to the acceleration of an object
What is unbalanced forces?
Every action has an equal and opposite reaction
What is Newton's 3rd law of motion?
What is increasing the height or mass of the object?
Criteria for work
what movement and applied force in the direction of the motion
The unit for energy
an object accelerating to the right
drawing with unbalanced forces to the right
Things that influence the acceleration of an object
What is force and mass?
Ways to increase kinetic energy
What is increase mass and velocity
The amount of work done by Ms. Davis if she pushes on her car with a force of 30 N and it moves 0 m.
0J
the support force exerted upon an object that is in contact with another stable object
What is normal force?
A college student rests a backpack upon his shoulder. The pack is suspended motionless by one strap from one shoulder. A free-body diagram for this situation looks like this
Tension upward force equal to downward gravity force
An object's resistance to change in motion
What is inertia?
Examples of kinetic and potential energy
chemical energy, thermal energy, electrical energy, gravitational energy
The amount of work done if a force of 14.7 N is used to drag the loaded cart along the incline for a distance of 0.90 meters.
What is 13.2 J
Attractive force between two objects with mass
What is gravitational force?
A force is applied to the right to drag a sled across loosely packed snow with a rightward acceleration. Neglect air resistance. A free-body diagram for this situation looks like this:
friction force to the left, greater applied force to the right, normal force up, equal gravity force down
A 4.0-kg object is moving across a friction-free surface with a constant velocity of 2 m/s needs this force applied to maintain its motion.
What is 0N force?
The potential energy of a cart if it is loaded with a brick and pulled at constant speed along an inclined plane to the height of a seat-top. The mass of the loaded cart is 3.0 kg and the height of the seat top is 0.45 meters.
13.2 J
The amount of work done when Ben Travlun carries a 200-N suitcase up three flights of stairs (a height of 10.0 m) and then pushes it with a horizontal force of 50.0 N at a constant speed of 0.5 m/s for a horizontal distance of 35.0 meters.
Vertical= 2000 J
Horizontal= 1750 J
=3750 J