A cheetah runs 900m in 30s. How fast is it going?

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30 m/s

40 m/s

80 m/s

None of these

answer is A.

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Detailed Solution

Concept: We are aware that speed is a concept in physics that describes how quickly or slowly an object is traveling. We are also aware that the definition of speed is the change in an object's location with regard to its beginning position and time.
We are aware that speed is a scalar variable that describes the size of an object in motion. The overall distance that an object travels in a given amount of time is referred to as speed. It is expressed mathematically as s=d/t, where s is the object's speed as a function of distance d in time t. The standard international unit of speed is known as kilometers per hour.
Here, it is assumed that a cheetah will travel d= 900 meters in t=30 seconds.
Then the cheetah's speed is specified as s=d/t, and by swapping the numbers, we obtain
S=