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A circular track has a circumference of 3140m with ab as one of its diameter. a scooterist moves from along the circular path with a uniform speed of 10m/s.find distance covered by the scooterist ,displacement of thescooterist and time taken in reaching from a to b. |
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Answer» Hi friend, This is your required answer. Given, Circumference of circular track=2=3140m where r=radius of circle Now according to question,Scooter MOVES from a to b along the circular PATH (where ab is diameter).It means scooter COMPLETES half a revolution(circumference/2). So, Distance travelled=The ACTUAL path traversed by scooter=2/2=3140/2=1570 m Again, Displacement=The shortest distance travelled by scooter(Final position-Initial position)=Diameter of the circle=2r Since 2=3140m (here =3.14) 2r=3140/3.14=1000 m. To calculate the time TAKEN by the scooter in reaching from a to b,we have a formula Speed=Distance/Time Time=Distance/Speed=1570/10=157 seconds. Hope this helps you..☺☺ |
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