Demo: Randomized multiple choice options

A ball with mass $m =1.4\rm\ kg$ is thrown downward from the top of a building with height $h = 12\rm\ m$ and initial speed $v_0$ at an angle $\theta$ with respect to the horizontal as shown in the figure. The $x$-component of the initial velocity $v_{x0} = 16.103\rm\ m/s$, and the ball hits the ground a distance $d = 18\rm\ m$ from the building as shown in the figure.

How long is the ball in the air?

Correct answer

Student view placeholder

In student views this area is used for assessment and score info.
Tools

Staff information

Question

QID:
Title:
Demo: Randomized multiple choice options

Variant

Started at:
2026-09-19 07:02:56 (CDT)
Duration:
0s
Show/Hide answer 
{
  "t": {
    "key": "d",
    "html": "None of the above",
    "score": 1,
    "feedback": null
  }
}
This box is not visible to students.
History
dec frac
rad deg