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Questions and Answers
What is the direction of the acceleration due to gravity on a projectile?
What is the direction of the acceleration due to gravity on a projectile?
- Vertically downwards (correct)
- Diagonally
- In the direction of motion
- Horizontally
What is the maximum angle of release for which the range of the projectile is maximum?
What is the maximum angle of release for which the range of the projectile is maximum?
- 90 degrees
- 30 degrees
- 60 degrees
- 45 degrees (correct)
What happens to the range of the projectile when the angle of release is increased beyond 45 degrees?
What happens to the range of the projectile when the angle of release is increased beyond 45 degrees?
- It becomes zero
- It decreases (correct)
- It increases
- It remains the same
What is the effect of increasing the angle of release on the height of the projectile?
What is the effect of increasing the angle of release on the height of the projectile?
What is the relationship between the horizontal and vertical motions of a projectile?
What is the relationship between the horizontal and vertical motions of a projectile?
What is the characteristic of the horizontal velocity of a projectile?
What is the characteristic of the horizontal velocity of a projectile?
What is the magnitude of the vertical acceleration of a projectile on Earth?
What is the magnitude of the vertical acceleration of a projectile on Earth?
What happens to the vertical velocity of a projectile during its trajectory?
What happens to the vertical velocity of a projectile during its trajectory?
Why does the horizontal velocity of a projectile remain constant?
Why does the horizontal velocity of a projectile remain constant?
What is the relationship between the horizontal velocity and the vertical acceleration of a projectile?
What is the relationship between the horizontal velocity and the vertical acceleration of a projectile?
What is the characteristic of the horizontal velocity of a projectile throughout its trajectory?
What is the characteristic of the horizontal velocity of a projectile throughout its trajectory?
Which direction is the vertical acceleration of a projectile?
Which direction is the vertical acceleration of a projectile?
What is the effect of gravity on the horizontal motion of a projectile?
What is the effect of gravity on the horizontal motion of a projectile?
What happens to the vertical velocity of a projectile at its maximum height?
What happens to the vertical velocity of a projectile at its maximum height?
What is the relationship between the horizontal velocity and vertical acceleration of a projectile?
What is the relationship between the horizontal velocity and vertical acceleration of a projectile?
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Study Notes
Projectile Motion
- Projectile motion is a fundamental concept in physics that describes the motion of an object in the air, subject only to the acceleration due to gravity.
- It is a parabolic motion in two dimensions.
Horizontal Velocity
- Horizontal velocity is the velocity of a projectile in the horizontal direction.
- Horizontal velocity is constant throughout the entire trajectory of a projectile.
- Gravity only acts in the vertical direction, so there is no horizontal acceleration.
- The horizontal speed of a projectile remains unchanged, regardless of the launch angle, initial speed, or any other factors.
Vertical Acceleration
- Vertical acceleration is the acceleration of a projectile in the vertical direction.
- Vertical acceleration is equal to the acceleration due to gravity, approximately 9.8 m/s² on Earth.
- The vertical acceleration is constant and affects the vertical component of the projectile's velocity.
- The vertical velocity of a projectile changes direction and magnitude during its trajectory.
- Before the object reaches its maximum height, the vertical velocity decreases.
- At the projectile's maximum height, the vertical velocity becomes zero.
- After the maximum height, the vertical velocity increases.
Key Concepts
- Horizontal velocity is constant throughout the trajectory of a projectile.
- Vertical acceleration is constant and equal to the acceleration due to gravity.
- There is no horizontal acceleration, as gravity only acts in the vertical direction.
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