Projectile Motion Problem Solving

This video tutorial by Mr. H covers horizontally launched projectile problems. It explains the characteristics of such projectiles, emphasizing that they are influenced only by gravity, with no initial vertical velocity. The tutorial introduces kinematic equations and a five-step strategy for solving these problems, which includes reading the problem, identifying known and unknown variables, selecting equations, and solving for unknowns. The video provides detailed examples to illustrate the application of this strategy and concludes with additional resources for further practice.

What is the initial vertical velocity of a horizontally launched projectile?

• Depends on the height

• Same as horizontal velocity

• 0 m/s

• 9.8 m/s

Which force acts on a horizontally launched projectile?

• Friction

• Magnetic force

• Air resistance

• Gravity

What is the first step in solving a projectile problem using the five-step strategy?

• Solve for unknowns

• Read and diagram the problem

• Select equations

• Identify known variables

In the five-step strategy, what is the purpose of the x-y table?

• To measure distances

• To list all possible equations

• To separate known and unknown variables

• To calculate time

When solving for time in a projectile problem, which column of the x-y table should you use?

• The column with the most known values

• The x column

• The y column

• Both columns

What is the typical trajectory of a horizontally launched projectile?

• Parabolic path

• Straight line

• Circular path

• Zigzag path

In the example problem, what is the initial horizontal velocity of the ball?

• 0 m/s

• 2.63 m/s

• 9.8 m/s

• 1.42 m/s

What is the acceleration due to gravity used in these projectile problems?

• Depends on the mass

• -9.8 m/s²

• 9.8 m/s²

• 0 m/s²

How do you determine the horizontal displacement in a projectile problem?

• By using the vertical velocity

• By measuring the height

• By multiplying time with initial horizontal velocity

• By using the acceleration

What is the final step in the five-step strategy for solving projectile problems?

• Substitute values and solve

• Identify unknown variables

• Read and diagram

• Select equations