Average Speed
Average Speed
Average Speed
Average speed of an object in a time interval is equal to the total distance travelled divided by the total time taken.
Different units of speed: The SI unit of speed is meter per second. Another commonly used is kilometer per hour. When we talk about speed of aeroplanes and cars, it would be more appropriate to use km/h than m/s.
Let us take an example to understand this concept :
Illustration 1: In traveling form Pune to Nagpur, Rahul drove his bike for 2 hours at the speed 6 kmph and 3 hours at 70 kmph. Find his average speed
Solution : We know that,
Distance = Speed x Time
So, in 2 hours, distance covered = 2 x 60 = 120 km
In the next 3 hours, distance covered = 3 x 70 = 210 km
Total distance covered = 120 + 210 = 330 km
Total time = 2 + 3 = 5 hrs
Average speed :
A train travels between two stations 'P' and 'Q' . it travels with a velocity 20 km | |||
| Right Option : C | |||
| View Explanation | |||
An object completes one round of circle of radius 7 m in 20 sec.Distance travelled after 10 sec is | |||
| Right Option : B | |||
| View Explanation | |||
A car covers 30 km at a uniform speed of 30 km/hr . What should be its speed for the next 90 km , if the average speed for the entire journey is 60km/hr ? | |||
| Right Option : A | |||
| View Explanation | |||
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8thIn terms of methodology I want to say that institute provides expert guidence and results oriented monitering supplements by requsite study material along with regular tests which help the students to improve their education skills.The techniques of providing education helps the students to asses...
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