All Flashcards
What are the key differences between horizontal and vertical motion in projectile motion (ignoring air resistance)?
Horizontal Motion: Constant velocity, zero acceleration. | Vertical Motion: Constant acceleration (due to gravity), changing velocity.
Compare and contrast velocity and acceleration in multi-dimensional motion.
Velocity: Can change in both magnitude and direction. | Acceleration: Can vary between dimensions and may be non-uniform.
Compare the motion of a projectile at its launch point versus at its maximum height.
Launch Point: Non-zero vertical and horizontal velocity components. | Maximum Height: Zero vertical velocity, non-zero horizontal velocity.
Differentiate between quantitative and qualitative analysis in the context of 2D and 3D motion.
Quantitative Analysis: Involves precise numerical calculations and measurements (common in 2D). | Qualitative Analysis: Focuses on descriptions and observations without specific numerical values (may be used in 3D).
Compare the effect of gravity on horizontal versus vertical motion of a projectile.
Horizontal Motion: Gravity has no direct effect (assuming no air resistance). | Vertical Motion: Gravity causes constant downward acceleration.
What are the steps to analyze multi-dimensional motion?
1: Break down the motion into x, y, and z components. 2: Analyze each component independently using 1D kinematic equations. 3: Combine the components to determine the overall motion.
How do you solve a projectile motion problem?
1: Resolve the initial velocity into horizontal () and vertical () components. 2: Analyze vertical motion using kinematic equations with . 3: Analyze horizontal motion using constant velocity (). 4: Use time as the common variable between horizontal and vertical motion.
Describe the process of finding the maximum height of a projectile.
1: Recognize that the vertical velocity () is zero at the maximum height. 2: Use the kinematic equation to find the time to reach the maximum height. 3: Use the kinematic equation to find the maximum height.
How do you determine the range of a projectile launched on level ground?
1: Find the total time of flight (twice the time to reach maximum height). 2: Use the equation to calculate the horizontal range, where is the initial horizontal velocity and t is the total time of flight.
Explain the steps to calculate the time of flight for a projectile.
1: Determine the initial vertical velocity (). 2: Use the kinematic equation to find the time to reach the maximum height (where ). 3: Double the time to reach the maximum height to find the total time of flight (assuming launch and landing at the same height).
What is the effect of increasing the launch angle of a projectile (while keeping initial velocity constant) on its range?
The range increases up to a launch angle of 45°, then decreases for angles greater than 45° (assuming level ground).
What is the effect of gravity on the vertical velocity of a projectile?
Gravity causes a constant downward acceleration, decreasing the upward vertical velocity until it reaches zero at the maximum height, then increasing the downward vertical velocity.
What effect does increasing initial velocity have on the range of a projectile?
Increasing the initial velocity increases the range of the projectile (assuming all other factors remain constant).
What happens to the time of flight of a projectile if the initial vertical velocity is increased?
The time of flight increases because it takes longer for gravity to bring the projectile back down.
What is the effect of launching a projectile on a planet with higher gravitational acceleration?
The range and maximum height of the projectile will decrease, and the time of flight will be shorter.