General Physics Common

Question 1

Flashcard 1 Speed

Answer 1

• Definition: Speed is the rate of change of distance with respect to time.
• Formula: Speed = Distance / Time
• Unit: The SI unit of speed is meters per second (m/s).

Question 2

Flashcard 2: Velocity

Answer 2

• Definition: Velocity is the rate of change of displacement with respect to time.
• Formula: Velocity = Displacement / Time
• Unit: The SI unit of velocity is meters per second (m/s).
• Direction: Velocity is a vector quantity, meaning it has both magnitude and direction.

Question 3

Flashcard 3: Acceleration

Answer 3

• Definition: Acceleration is the rate of change of velocity with respect to time.
• Formula: Acceleration = Change in Velocity / Time
• Unit: The SI unit of acceleration is meters per second squared (m/s²).
• Direction: Acceleration can be positive (speeding up) or negative (slowing down).

Question 4

Flashcard 4: Average Speed

Answer 4

• Formula: Average Speed = Total Distance / Total Time
• It is the total distance traveled divided by the total time taken.

Question 5

Flashcard 5: Average Velocity

Answer 5

• Formula: Average Velocity = Totall Displacement / Total Time
• It is the total displacement divided by the total time taken.

Question 6

Flashcard 6: Instantaneous Speed

Answer 6

• Definition: The speed of an object at a specific point in time.
• It is measured using a speedometer in vehicles.

Question 7

Flashcard 7: Instantaneous Velocity

Answer 7

• Definition: The velocity of an object at a specific point in time.
• It is measured using a velocity-time graph.

Question 8

Flashcard 8: Deceleration

Answer 8

• Definition: A negative acceleration, meaning the object is slowing down.
• Formula: Deceleration = Change in Velocity / Time
• Unit: The SI unit of deceleration is meters per second squared (m/s²)

Question 9

Flashcard 9: Uniform Motion

Answer 9

• Definition: An object moving at a constant speed in a straight line.
• Velocity and speed are constant.
• Acceleration is zero.

Question 10

Flashcard 10: Non-uniform Motion

Answer 10

• Definition: An object that is not moving at a constant speed.
• Acceleration is present.

Question 11

Flashcard 11: Displacement

Answer 11

• Definition: Displacement is the change in position of an object.
• Formula: Displacement = Final Position - Initial Position
• Unit: The SI unit of displacement is meters (m).
• Direction: It is a vector quantity with both magnitude and direction.

Question 12

Flashcard 12: Scalar Quantity

Answer 12

• Definition: A physical quantity that has only magnitude and no direction.
• Examples: Speed, distance, and time.
• Scalar quantities can be added or subtracted like regular numbers.

Question 13

Flashcard 13: Vector Quantity

Answer 13

• Definition: A physical quantity that has both magnitude and direction.
• Examples: Velocity, displacement, and acceleration.
• Vector quantities follow the rules of vector addition and subtraction.

Question 14

Flashcard 14: Acceleration Due to Gravity (g)

Answer 14

• Definition: The acceleration an object experiences due to gravity.
• Value: Approximately 9.81 m/s² near the surface of the Earth.
• Direction: Always directed towards the center of the Earth.

Question 15

Flashcard 15: Free Fall

Answer 15

• Definition: The motion of an object solely under the influence of gravity.
• Acceleration: Objects in free fall experience an acceleration of approximately 9.81 m/s² downward.

Question 16

Flashcard 16: Distance-Time Graph

Answer 16

• Shape: The slope of the line on a distance-time graph represents speed.
• Flat line: Represents stationary or uniform motion.
• Curved line: Represents non-uniform motion.

Question 17

Flashcard 17: Velocity-Time Graph

Answer 17

• Shape: The slope of the line on a velocity-time graph represents acceleration.
• Flat line: Represents uniform velocity or no acceleration.
• Positive slope: Represents positive acceleration.
• Negative slope: Represents negative acceleration or deceleration.

Question 18

Flashcard 18: Equations of Motion

Answer 18

1. v = u + at
   
   • Final velocity v
   • Initial velocity u
   • Acceleration a
   • Time t
2. s = ut + \frac{1}{2}at^2
   - Displacement s
   - Initial velocity u
   - Acceleration a
   - Time t
3. v^2 = u^2 + 2as
   - Final velocity v
   - Initial velocity u
   - Acceleration a
   - Displacement s

Question 19

Flashcard 19: Terminal Velocity

Answer 19

• Definition: The constant speed reached by an object falling through the atmosphere when the force of air resistance equals the force of gravity.
• Value: Approximately 53 m/s for a human in free fall.
• Factors: Depends on the object’s shape, size, and mass, and the density of the air.

Question 20

Flashcard 20: Relative Velocity

Answer 20

• Definition: The velocity of an object as observed from another object.
• Formula: ( v_{\text{relative}} = v_{\text{A}} - v_{\text{B}} )
  
  • ( v_{\text{A}} ): Velocity of object A
  • ( v_{\text{B}} ): Velocity of object B