APFIVE Relative Velocity in One Dimension
A train moves with a constant velocity of 30 m/s eastward. To an observer on the train, a bird flying alongside appears to be stationary. Which of the following describes the bird’s motion as measured by a stationary observer on the ground?
A
Stationary (0 m/s)
B
Moving eastward at 30 m/s
C
Moving eastward at 60 m/s
D
Moving westward at 30 m/s
Question Leaderboard
| Rank | |||||
|---|---|---|---|---|---|
| #1 | beggahrasha0 | 2 | 2 | 0m 00s | 200 |
| #2 | abdirakhmanbattal | 2 | 3 | 0m 52s | 138 |
| #3 | khr100520 | 1 | 1 | 0m 00s | 100 |
| #4 | seyftaha25 | 1 | 1 | 0m 00s | 100 |
| #5 | epickidaaron | 1 | 1 | 0m 00s | 100 |
| #6 | kabraprachi23 | 1 | 1 | 0m 00s | 100 |
| #7 | zhanchunyu2009 | 1 | 1 | 0m 00s | 100 |
| #8 | hyeokjinlee0924 | 1 | 1 | 0m 05s | 95 |
| #9 | akhil.selvakumaran | 2 | 3 | 1m 35s | 95 |
| #10 | kma4910 | 1 | 2 | 0m 00s | 90 |
Items per page:
10
1 – 10 of 37