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Speed of the deer = 144 km/h = 144 × (5/18) = 40 m/s Distance covered by the cheetah in 10 seconds = 50 metres + distance covered by the deer in 10 seconds = 50 + 40 × 10 = 50 + 400 = 450 metres So, speed of the cheetah = 450/10 = 45 m/s Speed of the zebra = 35 × (80/100) = 28 m/s So, relative speed of the cheetah with respect to the zebra = 45 – 28 = 17 m/s Hence, time taken by the cheetah to catch the zebra = 170/17 = 10 seconds
What is the colour of the outer zone of complete combustion of candle flame?
Glycol is used to manufacture which of the following?
What is used in cloud seeding to produce artificial rain?
Which of the following metals forms an amphoteric oxide?
Which of the following is the lightest metal?
Which of the following is correct regarding isobars?
I. They have different atomic numbers
II. The have same mass numbers
Which gas is evolved during the reaction of an acid with a metal?
The colour of neutral litmus solution is
The reaction of an aldehyde with Tollens’ reagent results in:
Vitamin necessary to prevent prolonged bleeding is