# 1. it involves both speed and total displacement

1.      Basically
kinematics is the study of motion without considering the connecting forces. It
is used along with dynamics to calculate velocities, masses, momentum and
energy during collisions. Kinematics deals with any motion of any object
without considering the mass of each or the forces that caused the motion
(Brent, 2013).

2.      Distance
is the length of the total path covered by a body in motion. Distance simply
means how far one point is from the other point or how far you have moved from
one position to the next. A scalar quantity is a one dimensional
measurement of a quantity and distance falls under this category. Distance
equals speed by time (Weidner, 1989).

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3.      Displacement
is a vector quantity meaning that it has more than one number associated
with it. A vector is a quantity that requires both magnitude and direction. Displacement
is the shortest distance between the initial and the final position. It is the
vector value of how far an object has been displaced; meaning how far is it
from where it started. Displacement
= (final position) – (initial position) = change in position. (Walden,
2015).

4.      Distinguish
between distance and displacement – As mentioned before, distance is a scalar
quantity and displacement is a vector quantity. At first I was a bit confused
with what the difference is because both are so similar, however, in fact, they
are quite different. Distance is a scalar quantity that
refers to how much an object has covered during its motion as opposed to
displacement which is a vector quantity that
refers to how far out of place an object is, that is the object’s overall
change in position (Duncan, 1985).

5.      Speed
is the distance travels per unit time, or the rate of change of distance with
respect to time. Speed is a measure of how quickly an object moves from one
place to another. It is equal to the distance traveled divided by the
time. Speed equals to distance divided by time (Weidner, 1989).

6.      Velocity is
a vector quantity that
refers to the rate at which an object changes its position so when evaluating
the velocity of an object, one must keep track of direction. The velocity of an
object is its speed in a particular direction (Duncan, 1985). Velocity can also
be defined as rate of change of displacement or just as the rate of
displacement. Velocity is called a vector quantity because it involves both
speed and total displacement of the body from one time to another. The equation or formula for velocity is similar to speed. To figure out velocity, you divide the distance by the time it takes to travel
that same distance, then you add your direction to it (Walden, 2015).

7.      Distinguish
between speed and velocity: Velocity is a vector quantity of a moving body is
its rate of displacement with respect to time. Speed is a scalar quantity
and is distance traveled per unit time. Speed is a steady speed, neither
speeding up not slowing down; velocity is constant speed and constant direction
(Brent, 2013).

8.
Acceleration is the rate at which
the velocity of an object changes. Basically, if an object is speeding up per a
given unit of time, it is said to be accelerating. For example,  If a
car drives at a speed of 2 miles/hour in 1 second, then 4 miles/hour in another
second, then 6 miles/hour in the 3rd second, then the car is accelerating at a
constant pace every second, it goes at a speed that is 2 miles/hour faster than
the previous second. This is acceleration.
Acceleration is the change in the velocity, divided by the time (Duncan,
1985).

9.      Acceleration
due to gravity – the acceleration which is gained by an object
because of gravitational force is called its acceleration due to gravity.
Gravity always acts vertically downwards on an object. Now if an object is
moving downwards gravity acts downwards on it as it should be and so gravity is
considered positive. Again if an object is moving upwards, the object acts
against gravity rather which is opposite to the usual, where gravity should act
on the object but this time the object is acting against gravity and so gravity
is considered to be negative (Weidner, 1989)

10.  Distinguish
between freefall and non freefall – In Newtonian physics, free fall is any
motion of a body where gravity is the only force acting upon it. A body in free
fall has no force acting on it and it is only moving up and down and hence in
this case fall doesn’t only mean downwards. Free fall when an object falls
downward it experiences force of gravity. Non-free fall is when there is no air
resistance. During free fall, other forces like air resistance, which is
the friction due to air, do not affect the object’s motion. Example f a
freefall based on the definition would be a ball falling in a vacuum and a non
free fall example would be a ball falling through air (Walden, 2015).

11.  Acceleration
of a freefalling object – Something is in free fall if gravity is the only
force acting on it. Acceleration in free fall is the rate of fall of an object.
It is measured by the force divided by mass of the object. Acceleration in free
falls occurs when no other force acts on the falling body except gravity
(Duncan, 1985).

References

Brent,
M. (2013, November). Introductory Physics I. Retrieved January 16, 2018, from
https://www.bing.com/ 2fintro_physics_1.pdf

Duncan, T., & O?nac?, D. T. (1985). Physics for the Caribbean: a CXC
course (2nd