Motion in Two Dimensions flashcards
10 practice cards drawn from the Motion in Two Dimensions lessons. Tap a card to turn it over. Every answer is checked against the lesson it came from.
Read the Motion in Two Dimensions lessons in full →
and v = (3, 3). Where is the object at t = 3?
(11, 10)
from “Position and Velocity as Vectors”
An object has velocity (6, 8). How far does it travel each second?
10
from “Position and Velocity as Vectors”
A is at 3 + 3t and B at 21 − 1t on the same axis. When are they level?
4.5
from “Meeting Points and Travel Times”
A is at 1 + 3t and B at 16 − 1t on the same axis. When are they level?
3.75
from “Meeting Points and Travel Times”
The smallest value of is 9. What is the closest approach?
3
from “The Closest Approach of Two Objects”
. At what time are they closest?
4
from “The Closest Approach of Two Objects”
. What is v at t = 2?
(5, -3)
from “Velocity That Varies with Time”
r(t) = (cos t, sin t). What is the acceleration?
(−cos t, −sin t)
from “Velocity That Varies with Time”
Object B follows A’s path but sets off k seconds later. What is B’s position rule?
r(t − k)
from “Motion That Starts Later”
B copies A’s path from 1 second later. When is B where A was at t = 2?
3
from “Motion That Starts Later”