KUSH ACADEMY(Team Physics Study)

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Physics Two-Dimensional Motion (Projectile Motion) Questions For Grade 12.

1. Which of the following is true about a projectile in motion? 
   A) It has no horizontal velocity. 
   B) Its horizontal acceleration is zero. 
   C) Its vertical acceleration is zero. 
   D) Both horizontal and vertical accelerations are constant. 

2. What is the shape of the path followed by a projectile under uniform gravity (neglecting air resistance)? 
   A) Circle 
   B) Straight line 
   C) Parabola 
   D) Ellipse 

3. If a ball is thrown horizontally, what determines the time it takes to hit the ground? 
   A) Its horizontal speed 
   B) The height from which it is thrown 
   C) Its horizontal distance 
   D) The angle of projection 

4. At the top of its trajectory, the vertical velocity of a projectile is: 
   A) Maximum 
   B) Zero 
   C) Equal to the horizontal velocity 
   D) Negative 

5. The horizontal component of a projectile's velocity: 
   A) Decreases continuously. 
   B) Increases continuously. 
   C) Remains constant. 
   D) Becomes zero at the top of its trajectory. 

6. The range of a projectile is maximum when the angle of projection is: 
   A) 30° 
   B) 45° 
   C) 60° 
   D) 90° 

7. The motion of a projectile is an example of: 
   A) Uniform motion 
   B) Uniform acceleration 
   C) Non-uniform acceleration 
   D) Combination of uniform and uniformly accelerated motion 

8. The time of flight of a projectile depends on: 
   A) Only the horizontal velocity 
   B) Only the vertical velocity 
   C) The initial velocity and the angle of projection 
   D) The horizontal distance covered 

9. If the initial velocity of a projectile is doubled, what happens to its range (assuming the same angle of projection)? 
   A) It doubles 
   B) It quadruples 
   C) It remains unchanged 
   D) It halves 

10. In two-dimensional motion, which quantity is always independent of the other? 
    A) Horizontal acceleration 
    B) Vertical displacement 
    C) Horizontal velocity 
    D) Vertical velocity 

11. When a projectile is launched at an angle to the horizontal, its maximum height depends on: 
    A) The horizontal component of velocity 
    B) The vertical component of velocity 
    C) The total velocity 
    D) The angle of projection 

12. Which of the following best describes the acceleration of a projectile? 
    A) It is zero. 
    B) It is directed downward and constant. 
    C) It varies with time. 
    D) It is directed along the projectile's path. 

13. The velocity of a projectile at its highest point is: 
    A) Zero 
    B) Entirely horizontal 
    C) Entirely vertical 
    D) Equal to its initial velocity 

14. What is the vertical acceleration of a projectile? 
    A) 0 m/s² 
    B) 9.8 m/s² upward 
    C) 9.8 m/s² downward 
    D) Depends on the launch speed 

15. For an object undergoing projectile motion, which of the following quantities remain constant throughout the motion? 
    A) Vertical velocity 
    B) Total speed 
    C) Horizontal velocity 
    D) Acceleration 

16. The total time of flight of a projectile is proportional to: 
    A) Initial horizontal velocity 
    B) Initial vertical velocity 
    C) Initial velocity 
    D) None of the above 

17. If a projectile's launch angle is increased from 30° to 60° while keeping the same initial speed, its range will: 
    A) Increase 
    B) Decrease 
    C) Remain the same 
    D) Be zero 

18. A stone is thrown horizontally from a cliff. Neglecting air resistance, its horizontal velocity: 
    A) Increases due to gravity 
    B) Decreases due to gravity 
    C) Remains constant 
    D) Becomes zero at the ground 

19. The magnitude of the velocity of a projectile is maximum at: 
    A) The highest point 
    B) The point of launch 
    C) The point of impact 
    D) When its horizontal and vertical velocities are equal

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Physics Questions with Answers Form Grade 9-12.

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✅ Fundamental physics terms along with their definitions:

1. Force: An interaction that causes an object to change its velocity, measured in newtons (N).

2. Mass: A measure of the amount of matter in an object, typically measured in kilograms (kg).

3. Acceleration: The rate of change of velocity of an object with respect to time, measured in meters per second squared (m/s²).

4. Velocity: The speed of an object in a specific direction, expressed in meters per second (m/s).

5. Energy: The capacity to do work, which can exist in various forms such as kinetic, potential, thermal, etc., measured in joules (J).

6. Work: The process of energy transfer that occurs when a force is applied to an object over a distance, calculated as the product of force and displacement.

7. Power: The rate at which work is done or energy is transferred, measured in watts (W).

8. Kinetic Energy: The energy possessed by an object due to its motion, calculated as  KE = ½mv² .

9. Potential Energy: The energy stored in an object due to its position or configuration, commonly gravitational potential energy given by  PE = mgh .

10. Momentum: The product of an object's mass and its velocity, representing the quantity of motion it possesses, calculated as  p = mv .

11. Newton's First Law: An object at rest stays at rest, and an object in motion stays in motion with the same speed and direction unless acted upon by a net external force.

12. Newton's Second Law: The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass, expressed as  F = ma .

13. Newton's Third Law: For every action, there is an equal and opposite reaction.

14. Thermodynamics: The branch of physics that deals with heat, work, temperature, and the laws governing energy transfer.

15. Wave: A disturbance that transfers energy through space and matter, characterized by properties such as wavelength, frequency, and amplitude.

16. Frequency: The number of cycles of a wave that occur in a unit of time, measured in hertz (Hz).

17. Refraction: The bending of light or other waves as they pass from one medium to another due to a change in speed.

18. Electromagnetism: The branch of physics that studies the interaction between electric charges and magnetic fields.

19. Quantum Mechanics: The branch of physics that deals with the behavior of matter and light on the atomic and subatomic levels.

20. Relativity: A theory proposed by Albert Einstein that describes the laws of physics in relation to observers in different frames of reference, particularly regarding the effects of gravity and the speed of light.