force Vocab
A push or pull exerted on an object, measured in Newtons (N)
motion, force, friction or gravity?
Force
A contact force that opposes the motion between two surfaces.
motion, position, speed or friction?
friction
The capacity or ability to do work or cause change.
energy, work, kinetic energy, or potential energy?
Energy
An object at rest stays at rest, and an object in motion stays in motion at a constant velocity unless acted upon by an unbalanced force.
Newtons 1st, 2nd, or 3rd law?
newtons first law (law of inertia)
two students are pulling on a rope in opposite directions with a force of 150 N each. What will happen to the rope?
A. It will move toward the stronger student.
B. It will not move at all because the forces are balanced.
C. It will accelerate rapidly forward.
D. It will snap in the middle.
B. It will not move at all because the forces are balanced.
The combination of all forces acting on an object.
balanced force, unbalanced force, net force, or gravity?
net force
The act or process of changing position or location over time.
motion, position, speed or friction?
motion
Done when a force moves an object over a distance; measured in Joules (J).
energy, work, kinetic energy, or potential energy?
Work
For every action, there is an equal and opposite reaction.
Newtons 1st, 2nd, or 3rd Law?
Newtons 3rd law
A cart is pushed to the right with a force of 20 N and simultaneously pushed to the left with a force of 5 N. What is the net force acting on the cart?
A. 25 N to the right
B. 15 N to the left
C. 15 N to the right
D. 5 N to the right
A. 25 N to the right
Forces that are equal in size and opposite in direction, resulting in no change in motion (net force is zero).
balanced force, unbalanced force, net force, or gravity?
balanced force
The speed of an object PLUS its direction.
speed, velocity, acceleration or force?
Velocity
Energy that is stored in an object or system because of its position, shape, or state.
energy, work, kinetic energy, or potential energy?
potential energy
An object's acceleration depends on its mass and the net force applied to it.
Newtons 1st, 2nd, or 3rd law?
Newtons 2nd law (F= ma)
A skateboarder travels a distance of 120 meters in 20 seconds. What is the average speed of the skateboarder?
A. 6 m/s
B. 2,400 m/s
C. 24 m/s
D. 100 m/s
A. 6 m/s
An attractive force that pulls objects toward one another, such as toward the Earth's center.
balanced force, unbalanced force, net force, or gravity?
Gravity
The distance an object travels per unit of time.
speed, velocity, acceleration, or motion?
speed
The energy of motion; energy an object possesses because it is moving.
potential energy, gravitational energy, kinetic energy, or work?
Kinetic energy
what is Newtons first name?
Isaac
Kinetic energy is the energy of motion. Which of the following objects has kinetic energy?
A. A book sitting on a high shelf
B. A car parked in the garage with the engine off
C. A runner jogging around a track
D. A stretched rubber band not yet released
C. A runner jogging around a track
Forces that are not equal, causing an object to change its speed, direction, or state of motion.
Balanced force, unbalanced force, force, or gravity?
unbalanced force
The rate at which velocity changes over time (speeding up, slowing down, or changing direction).
speed, velocity, acceleration, or position?
Acceleration
Energy cannot be created or destroyed, only transformed from one form to another.
Newtons 1st law, Newtons 2nd law, Law of Conservation of Energy, Newtons 3rd law?
Law of Conservation of Energy
An object's natural tendency to resist any change in its state of rest or motion
newtons 2nd law, motion, inertia, or newtons 3rd law?
Inertia
At which point on a roller coaster does a car have the greatest gravitational potential energy?
A. At the very bottom of the highest loop
B. At the peak of the highest hill
C. Halfway down a steep drop
D. When it is moving the fastest along a flat track
B. At the peak of the highest hill