Correct Answers 2025-2026 Updated.
distance - Answer The length of a path between two points
Displacement - Answer Distance and direction of an object's change in position from the
starting point.
position - Answer the location of an object
Speed - Answer The distance an object travels per unit of time
Acceleration - Answer The rate at which velocity changes
instantaneous speed - Answer the speed of an object at one instant of time
Force - Answer A push or pull on a object
net force - Answer The combination of all forces acting on an object
constant speed - Answer Speed that does not change
instantaneous speed - Answer the speed of an object at one instant of time
average speed - Answer total distance divided by total time
Newton's first law ( Aka Law of Inertia) - Answer "An object at rest remains at rest, and an
object in motion will remain in motion unless acted upon by some external net force."
A rock for example will remain at rest, it won't start spontaneously moving. An object in motion,
that does not encounter any friction will keep moving, like an object floating in space.
, To find acceleration: A= F/ m
" the acceleration an object experiences is directly proportional to the applied force and
inversely ( in the opposite manner) proportional to its mass.
Newton's Third Law - Answer For every action there is an equal and opposite reaction.
As a car hits a wall, it's force is applied to the wall but the force of the wall also acts on the car.
Remember, there can never be a single isolated force, forces always come in pairs.
coefficient of friction - Answer the ratio of the force of friction to the normal force acting
between two objects. When you find a coefficient of friction, you're calculating the resistance to
motion at the interface of two surfaces of similar or dissimilar materials.
( a brick sliding on a clean wooden table, the coefficient of kinetic friction is about 0.5)
Torque - Answer a turning or twisting force. Represented by T
Formula: T=Fd
mechanical advantage - Answer the ratio of the force that performs the useful work of a
machine to the force that is applied to the machine. the number of times a machine increases a
force exerted on it
work input - Answer Work input is the amount of energy supplied to the machine. Example-
The work done to hold the sugar piece by sugar tongs is the work input. Work input may be
defined as the product of the effort force applied to a machine and the distance through which
the force is applied. Work input is given to the machine to get desired work.
work output - Answer In physics, work output is the work done by a simple machine,
compound machine, or any type of engine model.
direct current - Answer an electric current that flows in one direction steadily