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Physics
An object travels 10 km at a speed of 100 m/sec and another 10 km at 50 m/sec. The average speed over the whole distance is
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Q. An object travels $10$ km at a speed of $100$ m/sec and another $10$ km at $50$ m/sec. The average speed over the whole distance is
UP CPMT
UP CPMT 2004
A
$ 75 \,m/sec$
B
$ 55 \,m/sec$
C
$ 66.7 \,m/sec$
D
$ 33.3 \,m/sec$
Solution:
Correct answer is (c) $ 66.7 \,m/sec$