The video tutorial explains the motion of a projectile launched from a platform, modeled by a quadratic equation. It covers the parabolic trajectory, calculating the initial platform height, determining the maximum height, and solving for when the projectile hits the ground.

What variable is used to represent time in the projectile's height equation?

• t

• x

• v

• h

Why does the parabola open downwards?

• Coefficient of x squared is negative

• Vertex is at the origin

• Vertex is at maximum height

• Coefficient of x squared is positive

Tags

CCSS.HSF-IF.C.7A

What is the shape of the projectile's trajectory?

• Linear

• Circular

• Hyperbolic

• Parabolic

What is the significance of the coefficient -5 in the height equation?

• Affects the direction of the parabola

• Affects the speed of the projectile

• Determines the initial height

• Determines the maximum height

What is the initial height of the platform in meters?

• 180 meters

• 200 meters

• 100 meters

• 80 meters

How many seconds after launch does the projectile reach its maximum height?

• 6 seconds

• 4 seconds

• 2 seconds

• 8 seconds

What is the maximum height reached by the projectile?

• 180 meters

• 160 meters

• 120 meters

• 100 meters

What does the vertex of the parabola represent in this context?

• Time to hit ground

• None of the above

• Initial height

• Maximum height

At what time does the projectile hit the ground?

• 14 seconds

• 8 seconds

• 10 seconds

• 12 seconds

What is the value of x when the height of the projectile is zero after launch?

• x = 10

• x = 12

• x = 6

• x = 4