1.a cyclist cover 140 km in 7hour express the speed of cyclist in km /hour.
2.A man moves at a uniform speed of 360km/hour. How long will it take to cover 36km.
3.Express to cover 36 km.
4. A piece of metal has a mass of 100g and volume is 60 cm³ centimetres density.
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Answer:
I am giving you directly answer by not going step by step.
The distance covered by a body in unit time .
speed is equal to distance / time
putting values
speed: 140 / 7
speed: 20m/s. ANSWER.
(2 and 3):
time is equal to distane /speed.
speed is equal to 360multiply 1000 /36000. ( by converting km/h into m/s).Speed is equal to 100m/s.
distance is equal to 36km.
36km is equal to 36000m.
putting values:
Time is equal to 36000m / 100m/s.
time: 360s.
Man going with uniform speed will take 360s .
4):
density:
density is equal to mass/volume.
density : 0.1 /60kg/cm3.
density : 0.001kg/cm3.
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