Question

(b) Give one word which means the same as 'moving with a negative a
(c) The displacement of a moving object in a given interval of time is zero. Would the distance travelled by
the object also be zero ? Give reason for your answer.
27. A snail covers a distance of 100 metres in 50 hours. Calculate the average speed of snail in km/h.​

Answer 1

Answer:

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Explanation:

(b) Retardation

(c) The displacement of a moving object in a given interval is zero i.e., the object comes back to its initial position in the given time (displacement is the shortest distance between the initial and final position of an object).

27. Given,

→Distance covered by snail≈100 metres

→Time elapsed by snail≈50 hour

 Average Speed=Total Distance

                            Elapsed Time  

By applying value,

Average speed=100

                         50

Average Speed=2 metres per hour⇒2 m/hr

We know that 1 meters per hour is equal to 0.001 kilometres per hour

So,

2 metres per hour=0.001×2 kilometres per hour 

2 metres per hour=0.002 kilometres per hour 

So speed of snail in km/hr is 0.002 km/hr