A runner completes one lap of a 200 meter circular track in 50 seconds. What is the average speed of the runner?
4 meter per second
To find the average speed of the runner, we can use the formula for average speed, which is given by:
\(\text{Average Speed} = \frac{\text{Total Distance}}{\text{Total Time}}\)
In this case:
- Total Distance covered by the runner is one lap of the circular track, which is 200 meters.
- Total Time taken to complete one lap is 50 seconds.
Using the formula:
\(\text{Average Speed} = \frac{200 \, \text{meters}}{50 \, \text{seconds}}\)
Calculating the above expression:
\(= \frac{200}{50} = 4 \, \text{meters per second}\)
Therefore, the average speed of the runner is 4 meters per second.
Let's evaluate the options given:
- 4.5 meters per second - Incorrect, as it is higher than the calculated average speed.
- 3 meters per second - Incorrect, as it is lower than the calculated average speed.
- 3.5 meters per second - Incorrect, as it is lower than the calculated average speed.
- 4 meters per second - Correct answer as it matches the calculated average speed.
Thus, the correct answer is 4 meters per second.
Similar Questions
- A train travels 45 m in 3 s. What is the speed of the train in km/h?
- Two runners, A and B, cover the same distance at the speeds of 15 km/h and 16 km/h, respectively. If A takes 16 min more than B, then the distance (in km) is:
- Two runners, A and B, cover the same distance at the speeds of 15 km/h and 16 km/h, respectively. If A takes 16 min more than B, then the distance (in km) is:
A boy goes to school at a speed of 5 km/hr. He returns at a speed of 14 km/hr. He takes a total of 8 hours for both going to school and returning. The distance (in km) between his home and school is:
Two trains of lengths 155 m and 160 m are running at speeds of 74 km/hr and 52 km/hr, respectively, on parallel tracks in opposite directions. In how many seconds will they pass each other?
- Raj takes $2 \frac{1}{3}$ hours to complete a certain distance at a speed of 51 km/hr. What time would Kiran take to complete the same distance at a speed of 68km/hr?
- An auto A covers a distance in 2 hours at the speed of 42 km/hr. Another auto B covers twice the distance covered by A in 5 hours. What is the speed of auto B (in km/hr)?
- Two trains travelling in the same direction at 40 km/h and 22 km/h cross each other completely in 1 minute. If the length of the first train is 125 m, what is the length of the second train?
A 280 m long train running at a speed of 72 km/hr passes a platform in 30 seconds. Find the length of the platform (in m).
Vijay rides a bicycle 10 m from home to his tuition, then 5 m to a shop. He travels back home the same way, covering the same distance. What is his total path length?
Important Questions from Speed Time and Distance
A train travelling at a speed of 72 km/hr crosses a post in 20 seconds. If it crosses another train travelling at a speed of 54 km/hr in the same direction in 1 minute 45 seconds, then the difference in length between the two trains is
Rajiv's boat can travel along the current at the 8 km/hour and against the current at the rate 6 km/hour. Find the time taken by the boat to sail 28 km in still water.
Two trains running in opposite directions cross a man standing on the platform in 25 seconds and 32 seconds respectively and they cross each other in 30 seconds. The ratio of their speed is:
A worker covers a distance of 81 km in 11 hours. He travels partly on foot at 4.5 km/h and partly on bicycle at 15 km/h. What is the distance covered on the cycle?
A car travels from a place X to place Y at an average speed of v km/hr from y to X at an average speed of 2v km/hr, again from X to y at an average speed of 3v km/hr and again from y to x at an average speed of 4v km/hr. Then the average speed of the car for the entire journey
