Forces & Motion

Question 1

What is Physics?

Answer 1

The branch of science concerned wuth the nature and properties of matter and energy.

Question 2

Meaning of Mass

Answer 2

It is the amount of matter in an object

Question 3

Meaning of force

Answer 3

It is a push or a pull that makes things move or change their motion

Question 4

Meaning of Motion

Answer 4

It refers to the change in position of an object wuth respect to its surroundings over a certain period.

Question 5

Kinds of Force

Answer 5

1 Gravitational Force
2 Normal force
3 Applied force
4 Frictional Force

Question 6

Balanced Forces

Answer 6

•Equal in size or magnitude
•The forces act in opposite direction

Question 7

Unbalanced Forces

Answer 7

•Not equal in size or magnitude
•The forces act in opposite or same direction

Question 8

Combining Forces

Answer 8

Netforce [Fnet]
Newton [N] -Unit of force and net force

Question 9

Who formulated the 3 laws of motion?

Answer 9

Sir Isaac Newton

Question 10

When was the birthdate and death day of Isaac Newton?

Answer 10

Born on: Jan 04,1643
Died on: March 31,1727

Question 11

3 Laws of Motion

Answer 11

1 Law of Interia
2 Law of Acceleration
3 Law of Interaction

Question 12

Law of Inertia

Answer 12

Is the property to resist change in its state of motion.

Question 13

Law of Inertia states that

Answer 13

“An object at rest remains at rest and an object in motion remains in motion,at constant speed and in straight line unless acted upon by an unbalanced force”

Question 14

Law of Acceleration states that:

Answer 14

“An object acted upon by an unbalanced force will accelerate in the direction of that force in direct proportion to the strength of the force,and inverse proportion to the mass of the object.”

Question 15

Symbol of Acceleration,Force,and Mass

Answer 15

1 a
2 F
3 m

Question 16

Unit of Acceleration,force,mass

Answer 16

Acceleration: m/s^2
Force: N
Mass: kg

Question 17

Formula of Acceleration,Force,mass

Answer 17

Acceleration: a = F
m
Force: F=m×a
Mass: m= F
a

Question 18

Law of Interaction

Answer 18

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

Question 19

Action-Reaction Forces

Answer 19

•Two forces are equal in size
• Two forces are opposite to each other in terms of direction
• Two forces have the same line of action
• Action acts on an object,while reaction acts on another object.

Question 20

Balanced Forces

Answer 20

• Two forces are equal in size
• Two forces are opposite to each other in terms of direction
• Two forces act along the same line
• Two forces act upon the same object