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Steve
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Professor1 kilometre = 1,000 metres
200 metres / 5 = 50 seconds / 5
40 metres = 10 seconds
240 metres = 60 seconds = 1 minute
240 x 60 metres = 1 minute x 60 = 1 hour
14,400 metres = 14.4 kilometres
Answer: 14.4 kilometres per hour
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speed = distance/time = 200 m / 50 s = 4 m/s
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What is the average speed of someone who runs 200 meters in 28 seconds?
200 metres/28 seconds = 7.1 metres/second, to the justified number of significant digits.
What is 200 meters in 22 seconds average speed in kilometers per hour?
(200 meters / 22 seconds) x (1 km / 1,000 meters) x (3,600 seconds / hour) =32.7272... km/hr (rounded, repeating)
A child runs 200 meters in 40 seconds calculate the average speed?
200 metres in 40 seconds 20 metres in 4 seconds 300 metres in 60 seconds or 1 minute 18000 metres in 60 minutes or 1 hour 18 kilometres in 1 hour
If someone runs 200 meters in 23 seconds what is their speed in miles per hour?
If someone or something covers 200 meters in 23 seconds, the average speed is about 19.45162 miles per hour. To solve, look at what you have to start with. You have 200 meters per 23 seconds. That's 200meters/23seconds in "math speak" here. Every mile has about 1609.344 meters in it. You already know that each minute has 60 seconds in it, and each hour has 60 minutes in it. Here's the setup: (200meters/23seconds) x (1mile/1609.344meters) x (1 minute/60seconds) x (60minutes/1hour) = Grab your calculator and have at it. Note that all the units cancel out and you're left with miles/hours or miles over hours or miles per hour. Piece of cake.
How much power is needed to lift the 200-n object to a height of 4m in 4 seconds?
Power = (energy) / (time) =(200 newtons x 4 meters) / (4 seconds) =200 newton-meters per second = 200 watts
