Your friend told you the motion of rocket is fast motion. Will you agr

1.	Your friend told you the motion of rocket is fast motion. Will you agree? How can you decide whether the motion of a body is slow or fast?
Answer» 1. Yes. I agree with him. Because rockets move with the speed of 12 km per second. Its very high speed. 2. The distance travelled by an object in a given interval of time can help us to decide whether it is faster or slower. 3. The distance travelled by an object in a unit time is called as its Speed. 4. Speed = Distance travelled / Time taken to travel. 5. Units of speed is meter per second (m/s) or kilometre per hour (Km/h). 6. 1 Km / h = 5/18 m/s 7. The object moving with less speed is slow and more speed is fast. Thus we can decide whether the motion of a body is slow or fast using its speed. 8. At a particular instant of time, we can find speed of a vehicle using speedometer.

Your friend told you the motion of rocket is fast motion. Will you agree? How can you decide whether the motion of a body is slow or fast?

Answer»

1. Yes. I agree with him. Because rockets move with the speed of 12 km per second. Its very high speed.

2. The distance travelled by an object in a given interval of time can help us to decide whether it is faster or slower.

3. The distance travelled by an object in a unit time is called as its Speed.

4. Speed = Distance travelled / Time taken to travel.

5. Units of speed is meter per second (m/s) or kilometre per hour (Km/h).

6. 1 Km / h = 5/18 m/s

7. The object moving with less speed is slow and more speed is fast. Thus we can decide whether the motion of a body is slow or fast using its speed.

8. At a particular instant of time, we can find speed of a vehicle using speedometer.