Thursday 10 August 2017

Need for speed


Distance is a measure to find out how much area is covered by a moving body when it is traveled from one point to the other.
Image result for Distance and displacement


Speed and velocity: Speed is Distance traveled by any object in a unit time is called speed. It is scalar quantity and velocity is distance traveled by any object in a unit time (or specified time).


Need For Speed

Distance is a measure to find out how much area is covered by a moving body when it is traveled from one point to the other. It is scalar quantity. Which does not have direction. Only the magnitude is there in the case of distance. The given  figure will explain About the distance but displacement on the other hand is the shortest distance traveled by a body from one point to other. It is a vector quantity. Which has both magnitude and direction. The displacement is illustrated by the given figure.
Image result for distance & displacement
Speed and velocity: Speed is Distance traveled by any object in a unit time is called speed. It is scalar quantity and velocity is distance traveled by any object in a unit time (or specified time).

Image result for Distance & displacement example0.

Speed and velocity: Speed is Distance traveled by any object in a unit time is called speed. It is scalar quantity and velocity is distance traveled by any object in a unit time (or specified time).



Need for Speed


                                        Total Distance
Average Speed =          ----------------------------
                                         Total time

                                        Total displacement
Average velocity =        -----------------------------

                                         Total time
Image result for distance and displacement

Here is a link to a video about Distance and Displacement
Distance:

Distance is a measure to find out how much area is covered by a moving body when it is travelled from one point to the other. It is a scalar quantity, which does not have direction. Only the magnitude is there in the case of distance. The given figure will explain about the distance.
Image result for Distance
Displacement:

Displacement is the shortest distance travelled by a body from one point to the other. It is a vector quantity. Which has both magnitude and direction. The displacement is illustrated by the given figure.
Image result for displacement
If a car travels 280 km at a speed of 70 km/hour then the time taken can be calculated.
Time = Distance/speed = 280/70 = 4 hours
Image result for Car driving

If a man is running for 6 hours at a speed of 12 km/hr. How much distance will he travel after 6 hrs.
Distance = speed x time = 12x6 = 72 km
Image result for man running

If a train travels 50 km in first 30 mins, then 40 km in the next 20 mins & in total it travels 150 km in 1 hour 30 mins. How long did it travel in the last 40 mins. What is its average speed?
Image result for train