DC -- projectile motion

The path of a projectile

• acceleration

• trajectory

• gravity

• velocity

How is air resistance considered in problems for this unit?

• as negligible

• as a resistant force

• as equal to gravity

• as debatable

The key to analyzing two-dimensional projectile motion is to ---

• isolate the variable

• take the square root of your answer

• include air resistance in the equation

• break it into 2 independent motions

Upwards direction is defined as ---

• positive

• negative

• projectile

• trajectory

Which of the following examples were NOT shown in diagrams in the reading?

• volcano rock

• soccer ball kick

• fireworks launching

• frog hopping

What is the value for acceleration in the horizontal direction? Recall: acceleration is a change in speed or direction.

• a = 9.8 m/s/s

• a = 0

• a = v_x

• a = v_y

At the peak of it's trajectory, what is the vertical velocity?

• v_y = 0

• v_y = v_x

• v_y = 9.8 m/s/s

• v_y = a

When solving projectile motion problems, what does "height" mean?

• how tall the cliff is

• how much space the object has to move in

• vertical position above the starting point

• how tall the object is