LESSON 6: LAWS OF MOTION

Question 1

It is the movement or change in location of an object over time; often described in terms of direction, location, and speed.

Answer 1

Motion

Question 2

the actual path traveled by an object

Answer 2

Distance

Question 3

indicates the length as a straight line from the initial to the final position of an object

Answer 3

Displacement

Question 4

measures the distance traveled over time

Answer 4

Speed

Question 5

represents the ratio of displacement and time

Answer 5

Velocity

Question 6

What is the equation for calculating Velocity?

Answer 6

v = d/t

Question 7

a vector quantity that measures the rate of change of
velocity

Answer 7

Acceleration

Question 8

What is the equation for calculating Acceleration?

Answer 8

a = final velocity - initial velocity/time

Question 9

described by magnitude alone

Answer 9

Scalar quantity

Question 10

described by both magnitude and
direction

Answer 10

Vector quantity

Question 11

What are the two types of quantity under Acceleration?

Answer 11

Scalar and Vector quantity

Question 12

the acceleration of a circular motion

Answer 12

Centripetal acceleration

Question 13

It is always in the direction of the circle’s center, and the speed of the object along its circular path is
constant

Answer 13

Centripetal acceleration

Question 14

usually referred to as “smooth plane”, in the real world, friction
still exists at the microscopic level of the said surface

Answer 14

Frictionless surface

Question 15

It does not mean that an object has no mass but the mass of the said object is much less than the other forces involved in a system in the study

Answer 15

Massless body

Question 16

the laws of physics simply give us the ability to predict/calculate different physical phenomena but these are intelligent estimations only.

Answer 16

Principle of “idealized models”

Question 17

a small part of the big universe on which the scientists choose to
focus their study on, wherein some factors in the real world are excluded in order to make the study more focused and easier.

Answer 17

Idealized model

Question 18

This individual developed the laws of motion to provide conceptual and mathematical foundations for the interaction of objects on Earth and beyond. The central theme of these laws is how forces affect the state of motion of any object.

Answer 18

Sir Isaac Newton

Question 19

an object at rest will remain at rest, an object in motion continues in motion with the
same speed and the same direction unless acted upon by an unbalanced force.

Answer 19

Law of Inertia - the first Law of Motion

Question 20

the push or pull upon an object resulting from its interaction with
another object.

Answer 20

Force

Question 21

Force is measured in terms of?

Answer 21

Newton(N); 1N=1kg. m/s2

Question 22

the two equal forces that act on an object in opposite directions; the sum of these forces is zero, thus, there is no change in motion

Answer 22

Balanced force

Question 23

equal forces in opposite directions produce no motion

Answer 23

Balanced force

Question 24

The sum of all the forces along
the x-axis is zero.

Answer 24

∑Fx = 0

Question 25

The sum of all the forces along the y-axis is zero.

Answer 25

∑Fy = 0

Question 26

one of the two forces acting upon an object is greater than the other; the object moves in the direction of the greater force; the sum of these forces is not equal to zero. Thus, there is a change in motion.

Answer 26

Unbalanced force

Question 27

Unequal opposing forces produce an ? causing motion

Answer 27

Unbalanced force

Question 28

Acceleration is produced when a force acts on a mass. The greater the mass (of the object being accelerated) the greater the amount of force needed (to accelerate the object).

Answer 28

Law of Acceleration - the Second Law of Motion

Question 29

What is the equation for finding the total force?

Answer 29

∑F = ma

Question 30

F in the equation is equal to?

Answer 30

total force - in Newton (N)

Question 31

m in the equation is equal to?

Answer 31

the mass of an object (kg)

Question 32

a in the equation is equal to?

Answer 32

acceleration (m/s2)

Question 33

It is directly proportional to the net force and inversely proportional to the mass.

Answer 33

Acceleration

Question 34

For every action, there is an equal and opposite reaction.

Answer 34

Law of Interaction - the Third Law of Motion

Question 35

What are the Three Laws of Motion? (in order from first to third)

Answer 35

Law of Inertia, Law of Acceleration, Law of Interaction

Question 36

What are the two types of forces under the Law of Inertia?

Answer 36

Balanced and Unbalanced forces