APFIVE Kinematics from a Position Function
The position of an object is given by the function x(t) = 5t² - 2t³. Which of the following statements correctly describes the motion of the object?
A
The object experiences constant acceleration
B
The object’s acceleration is zero at t = 5/3 s
C
The object reaches maximum displacement at t = 5/3 s
D
The object reverses direction at t = 5/3 s
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | zhanchunyu2009 | 1 | 1 | 0m 00s | 100 |
| #2 | carolinepoole.school | 1 | 1 | 0m 11s | 89 |
| #3 | kabraprachi23 | 1 | 4 | 0m 00s | 70 |
| #4 | dinhhoa | 1 | 4 | 0m 00s | 70 |
| #5 | leftoverjluck | 1 | 1 | 0m 33s | 67 |
| #6 | jfraleigh544 | 1 | 1 | 0m 35s | 65 |
| #7 | kcharanreddy07 | 1 | 1 | 0m 45s | 55 |
| #8 | friendlyid1234 | 1 | 1 | 0m 49s | 51 |
| #9 | bryleangelosajolbuen | 0 | 1 | 0m 00s | -10 |
| #10 | diegoputzg | 0 | 2 | 0m 04s | -24 |
Items per page:
10
1 – 10 of 28