Q2 - GenPhy1 ⚛️

Question 1

Is defined as the rate at which work is done or the rate of energy transferred. It measures how quickly energy is converted from one form to another or how fast work is performed.

Answer 1

Power

Question 2

Is the ability to do work or cause change.

Answer 2

Energy

Question 3

Cannot be created or destroyed; it can only change forms or be transferred between objects.

Answer 3

Energy

Question 4

It focuses on how the total mechanical energy in a system stays constant as long as no external forces (like friction or air resistance) are acting on it.

Answer 4

Conservation of Mechanical Energy

Question 5

This type of energy is the sum of two types of energy: Kinetic Energy & Potential Energy.

Answer 5

Mehanical Energy

Question 6

Which is the energy an object has, due to its motion.

Answer 6

Kinetic Energy

Question 7

Which is the energy stored in an object due to its position or condition.

Answer 7

Potential Energy

Question 8

States that the total mechanical energy in a closed system remains constant, as long as there are no external forces (like friction) acting on it.

Answer 8

(Principles of) Conservation of Mechanical Energy

Question 9

means that there are no external forces like friction, air resistance, or external work being done. These factors would cause a loss of mechanical energy, which would violate the principle of conservation.

Answer 9

Closed System

Question 10

Is defined as the product of object’s mass & its velocity. It is the vector quantity, meaning it has both magnitude & direction.

Answer 10

Linear Momentum

Question 11

This theory states that the impulse applied to an object is equal to the change in its momentum. It other words, the impulse exerted on an object results in a corresponding change in momentum.

Answer 11

Impulse Momentum Theorem

Question 12

This states that the total momentum of the system remains constant if no external force act on it. In an isolated system, the momentum before any interaction or collision remains the same.

Answer 12

Conservation in Momentum in Isolated System

Question 13

Occur when both the momentum & kinetic energy are conserved.

Answer 13

Elastic Collisions

Question 14

Happen when only the momentum is conserved but not the kinetic energy.

Answer 14

Inelastic Collisions

Question 15

The particles stick together after the collision. The final velocities are equal to each other & to the velocity of the center of mass:

Answer 15

Perfectly Inelastic Collision

Question 16

Is a position defined relative to an object or system of objects. It is the average position of all the parts of the system, weighted according to their masses.

Answer 16

Center of Mass

Question 17

For simple rigid objects with uniform density, the center of mass is located at the ____.

Answer 17

centroid

Question 18

Measures the angle through which an object has rotated about a fixed point or axis. It’s typically measured in radians, degrees, or revolutions

Answer 18

Angular Displacement

Question 19

Is the rate of change of angular displacement with respect to time. It indicates how fast an object is rotating.

measured in radians per second (rad/s) or degrees per second (°/s).

Answer 19

Angular Velocity

Question 20

Is the rate of change of angular velocity with respect of time. It describes how quickly an object’s rotational speed is changing.

measured in radians per second squared (rad/s2).

Answer 20

Angular Acceleration

Question 21

Displacement

a. The distance traveled along a path.

b. The angle through which an object has
rotated.

Answer 21

a. Linear Displacement (s)
b. Angular Displacement (θ)

Question 22

Velocity

a. The rate of change of linear displacement.

b. The rate of change of angular displacement.

Answer 22

a. Linear Velocity (v)
b. Angular Velocity (ω)

Question 23

Acceleration

a. The rate of change of linear velocity.

b. The rate of change of angular velocity.

Answer 23

a. Linear Acceleration (a)
b. Angular Acceleration (α)

Question 24

Is a measure of an object’s resistance to changes in its rotational motion about an axis. It depends on the mass of the object & the distribution of that mass relative to the axis of rotation.

Answer 24

Moment of Inertia

Question 25

Is the energy due to the rotation of an object. It is analogous to translational kinetic energy, which depends on mass & velocity.

Answer 25

Rotational Kinetic Energy

Question 26

Is a measure of the rotational force applied to an object. It is what causes an object to rotate about an axis.

Note: It is typically measure din Newton-meters (Nm) in the metric system.

Answer 26

Torque

Question 27

States that the net torque acting on a rotating object is equal to the moment of inertia of the object times its angular acceleration.

Answer 27

Newton’s Second Law for Rotations

Question 28

Are concepts analogous to linear work & energy but applied to rotating objects.

Answer 28

Rotational Work & Energy

Question 29

Is done when a torque is applied to an object, causing it to rotate through an angle.

Answer 29

Rotational Work

Question 30

Is a fundamental principle in physics stating that if no external torque acts on a system, the total angular momentum of the system remains constant. In simpler terms, an object’s angular momentum will stay the same unless acted upon by an outside force that creates torque.

Answer 30

Conservation of Angular Momentum

Question 31

A fundamental principle in physics that states that certain physical quantities remain constant within a closed system, provided no external forces or influences act on it. Essentially, these quantities are conserved over time.

Answer 31

Conservation Law