SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A runners races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
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10 m/s
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1000 m/s
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100 seconds
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10 seconds
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Explanation:
Detailed explanation-1: -It takes her 10 seconds to finish. What is her average speed? What is her average speed? Therefore her average speed is 10 m/s.
Detailed explanation-2: -So here’s how…. find the average speed by diving the distance over the time (100 / 10.7) the answer is 9.34m/s.
Detailed explanation-3: -100 meters/11 seconds = 9 1/11 meters/second.
Detailed explanation-4: -If you take the average speed of the current world 100 m record (Usain Bolt’s 9.58 s), you get about 10.44 meters/sec (23.35 miles/hr, 37.58 km/hr).
There is 1 question to complete.