Interactive physics simulator
Speed Simulator
Change distance and time to see how speed changes. Greater distance in the same time, or the same distance in less time, means greater speed.
Live Result
- Distance
- 100 m
- Time
- 50 s
- Timer
- 0 s
- Speed
- 2 m/s
- Unit
- m/s
- Formula
- Speed = Distance / Time
What is Speed?
Speed is the rate at which an object covers distance. If two objects travel for the same amount of time, the object that covers more distance has greater speed.
Key Definition
Speed is the rate at which an object covers distance.
- Speed tells how fast something moves.
- Speed is a scalar quantity.
- Speed has magnitude only.
- Speed does not show direction.
- SI unit of speed is meter per second (m/s).
Speed Formula
Speed = Distance / Time v = d / t Variables and units
- v = speed
- d = distance
- t = time
- distance in meters, time in seconds, speed in m/s
Real-life Example of Speed
A car travels 100 meters in 10 seconds.
Speed = Distance / Time Speed = 100 / 10 Speed = 10 m/s Solved Examples
View Solution: A runner covers 50 m in 10 s. Find speed.
Speed = 50 / 10 = 5 m/s
Final answer: 5 m/s
View Solution: A car travels 120 km in 2 hours. Find speed.
Speed = 120 / 2 = 60 km/h
Final answer: 60 km/h
View Solution: A ball moves 30 m in 3 s. Find speed.
Speed = 30 / 3 = 10 m/s
Final answer: 10 m/s
Common Mistakes
- Confusing speed with velocity.
- Forgetting to divide distance by time.
- Using wrong units.
- Writing direction with speed.
- Forgetting that speed is scalar.
- Mixing meters and kilometers without conversion.
Quick Summary
- Speed tells how fast an object moves.
- Formula: Speed = Distance / Time.
- Speed is scalar.
- Speed has no direction.
- SI unit is m/s.
- Greater distance in same time means greater speed.
- Same distance in less time means greater speed.
Practice Questions
1. Show Answer: A car travels 80 m in 8 s. Find speed.
Step: Use Speed = Distance / Time when numbers are given.
Speed = 80 / 8 = 10 m/s.
2. Show Answer: A runner runs 100 m in 20 s. Find speed.
Step: Use Speed = Distance / Time when numbers are given.
Speed = 100 / 20 = 5 m/s.
3. Show Answer: A train travels 300 km in 5 hours. Find speed.
Step: Use Speed = Distance / Time when numbers are given.
Speed = 300 / 5 = 60 km/h.
4. Show Answer: A ball moves 45 m in 9 s. Find speed.
Step: Use Speed = Distance / Time when numbers are given.
Speed = 45 / 9 = 5 m/s.
5. Show Answer: Is speed scalar or vector?
Step: Use Speed = Distance / Time when numbers are given.
Speed is scalar because it has magnitude only.
6. Show Answer: What is the SI unit of speed?
Step: Use Speed = Distance / Time when numbers are given.
The SI unit of speed is meter per second, written as m/s.
Frequently Asked Questions
What is speed in physics?
Speed is the rate at which an object covers distance. It tells how fast the object is moving.
What is the formula for speed?
The formula for speed is Speed = Distance / Time, or v = d / t.
What is the SI unit of speed?
The SI unit of speed is meter per second, written as m/s.
Is speed scalar or vector?
Speed is a scalar quantity because it has magnitude only and no direction.
What is the difference between speed and velocity?
Speed tells how fast an object moves, while velocity tells how fast it moves in a specific direction.
Can speed be negative?
No. Speed cannot be negative because it measures how fast distance is covered.
How does the speed simulator work?
The simulator uses the distance and time values entered by the user and calculates speed using Speed = Distance / Time.
How can I increase speed in the simulator?
You can increase speed by increasing distance for the same time or by reducing the time for the same distance.