please answer these questions as it is very very very urgrnt!!
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Hey there !!!!
9)As the artificial satellite is moving in a circular orbit , the distance travelled by the satellite is equal to circumference of the circle.
Distance =2πR
But, Distance = speed*time
speed=Distance/time
Here distance =2π*36000 Time=24hrs
Speed =2π*36000/24=9424km/h
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10) Cyclist travels a distance d₁=4km and d₂=3km
Displacement = (√d₁²+d₂²) =√4²+3² = √25 =5km
Distance = d₁+d₂ =3+4=7km
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11) length of train =100 m length of bridge=1000m
Total distance = length of train+length of bridge =1000+100=1100m
Speed of train =60kmph converting it into m/s
60*5/18 =300/18 =16.6 m/s
Distance=speed*time
time= distance/speed = 1100/16.6=66.25 seconds.
Hope this helped you...................
9)As the artificial satellite is moving in a circular orbit , the distance travelled by the satellite is equal to circumference of the circle.
Distance =2πR
But, Distance = speed*time
speed=Distance/time
Here distance =2π*36000 Time=24hrs
Speed =2π*36000/24=9424km/h
___________________________________________________
10) Cyclist travels a distance d₁=4km and d₂=3km
Displacement = (√d₁²+d₂²) =√4²+3² = √25 =5km
Distance = d₁+d₂ =3+4=7km
____________________________________________________
11) length of train =100 m length of bridge=1000m
Total distance = length of train+length of bridge =1000+100=1100m
Speed of train =60kmph converting it into m/s
60*5/18 =300/18 =16.6 m/s
Distance=speed*time
time= distance/speed = 1100/16.6=66.25 seconds.
Hope this helped you...................
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