unit 2 quiz general

What is the vertical acceleration of a projectile?

• 0 m/s²
• 9.8 m/s² down
• 4.9 m/s² down
• 12 m/s down

A ball rolls off a table top and strikes the floor as shown. Given the measurements made, the time the projectile spent in the air is ---.

• 17 s

• 0.34 s

• 0.58 s

• 0.49 s

A ball is rolling across a table with a horizontal velocity of 2m/s. It rolls off a table that's 2m tall. How far does the ball land away from the table (Δx)?

• 1.26 m Away
• 4.13 m Away
• 0.98 m Away
• 3.45 m Away

A frisbee is thrown 3.4 m/s East. The Frisbee curves and falls down 188.356 m. How much time is the Frisbee in the air?

• 7.44 seconds

• 6.2 seconds

• 19.22 seconds

• 9.8 m/s^2

Coyote runs off a cliff and lands 10 m from the bases of the cliff that is 35 m tall. Determine coyote's velocity as he ran off the cliff.

• 2.5 m/s

• 3.75 m/s

• 5 m/s

• 2 m/s

In the absence of air resistance, the angle at which a thrown ball will go the farthest is?

• 90°

• 30°

• 60°

• 45°

An object was launched with a velocity of 15 m/s at 35 degrees above the horizontal. What is the initial velocity on the x axis?

• 13 m/s

• 12.3 m/s

• 11 m/s

• 11.3 m/s

If an object had a total hang time of 6 seconds, how much time was spent on an upward trajectory?

• 6 s

• 4 s

• 2 s

• 3 s

Mollie plays volleyball in her PE class and serves the ball underhanded. When she serves, the ball flies into the air at 28 m/s at 48 degrees above the horizontal. What is the initial velocity on the y axis?

• 20.8 m/s

• 18.7 m/s

• -20.8 m/s

• -18 m/s

An object was launched with a velocity of 15 m/s at 35 degrees above the horizontal. What is the velocity on the y axis just before it hits the ground?

• 8.6 m/s

• 12.3 m/s

• -8.6 m/s

• 11 m/s