GED Science TestPhysical ScienceEasy
A car travels at a constant speed of 15 m/s for 30 seconds. How far does the car travel during this time?
- A450 meters
- B0.5 meters
- C45 meters
- D2 meters
Show answer & explanationAnswer & explanation
Correct answer: A. 450 meters
Distance is calculated by multiplying speed by time. Distance = Speed × Time = 15 m/s × 30 s = 450 meters.
Why the other options are wrong
- B. This would be time divided by speed (30/15), which is incorrect for distance.
- C. This is an arithmetic error (15 * 3 = 45, not 15 * 30).
- D. This would be speed divided by time (15/30), which is incorrect for distance.
Distance, Speed, Time
Distance is the total path length traveled by an object, calculated by multiplying its speed by the time taken.
- Distance = Speed × Time
- Speed = Distance / Time
- Time = Distance / Speed
Memory trick: Distance = Speed x Time (DST)