A motor car running at a speed of 300m/min crosses another motor car running at a speed of 2.5m/s. If both the cars have same mass, what is the ratio between their kinetic energies?
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Answer:
4:1
Step-by-step explanation:
speed of first car = 300m/minute
= 5m/second
ratio of kinetic energy will be ratio of square of their speed
hence, the required ratio is
5^2 : (2.5)^2
= 4 : 1
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