Question
This subfield of classical mechanics studies the motion of bodies, but not its causes. For 10 points each:
[10e] Give this field, the namesake of a set of four equations, that is contrasted with dynamics and statics.
ANSWER: kinematics [reject "kinetics"]
[10m] Description acceptable. The kinematic equations rely on this assumption that allows the time integral of velocity to be simplified to the expression "v-nought-t plus one-half-a-t-squared."
ANSWER: constant acceleration [accept answers describing acceleration not changing or jerk equal to zero; accept "a" instead of "acceleration"; prompt on "change in velocity" or "delta-v" instead of "acceleration"]
[10h] A kinematic coupling provides six of these mathematical statements, each of which decrements the number of degrees of freedom in a system. "Change in acceleration equals zero" is not a holonomic one of these statements because it is not just a function of coordinates and time.
ANSWER: constraints [accept holonomic constraints or nonholonomic constraints]
<Science - Physics>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 43 | 13.26 | 58% | 70% | 5% |