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www.GOALias.blogspot.comTable 13.3 Distance moved and time taken by a moving ballName of the groupDistance moved byTime taken (s)Speed = Distance/the ball (m)Time taken (m/s)Table 13.4, in km/h. You can calculatethe speeds in m/s yourself.Rockets, launching satellites intoearth’s orbit, often attain speeds up to8 km/s. On the other hand, a tortoisecan move only with a speed of about 8cm/s. Can you calculate how fast is therocket compared with the tortoise?Once you know the speed of anobject, you can find the distance movedby it in a given time. All you have to dois to multiply the speed by time. Thus,Distance covered = Speed TimeYou can also find the time an objectwould take to cover a distance whilemoving with a given speed.Time taken = Distance/SpeedBoojho wants to knowwhether there is any devicethat measures the speed.You might have seen a meter fittedon top of a scooter or a motorcycle.Similarly, meters can be seen on thedashboards of cars, buses and othervehicles. Fig. 13.7 shows the dashboardof a car. Note that one of the meters haskm/h written at one corner. This iscalled a speedometer. It records theTable 13.4 Fastest speed that some animals can attainS. No. Name of the objectSpeed in km/hSpeed in m/s1. Falcon 3202. Cheetah 1123. Blue fish 40 – 464. Rabbit 565. Squirrel 196. Domestic mouse 117. Human 408. Giant tortoise 0.279. Snail 0.05320 10 0 060 60150SCIENCE