Q&A for How to Calculate Speed in Metres per Second

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What is the speed of six meters in three minutes?

Christopher

Top Answerer

Since speed is the non-vectorial quantity of distance over time, it would be two meters per minute, given that six meters divided by three minutes equals two meters per minute.

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Question

What is 3x10^8 meters per second?

Community Answer

It's a good approximation of the speed of light. Use 299,792,458m/s if better accuracy is needed.

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I don't get how to find m/s with a graph. Can you clarify?

Community Answer

A distance-time graph shows distance along the y-axis and time along the x-axis. The graph will have a line representing the distance and time traveled for one person or thing. The coordinates of the line's endpoint will indicate the total distance traveled, and the total time traveled. Use the formula speed = distance/time to calculate the speed.

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You would need a caclulator to work out the above. How can you do this without one?

Community Answer

You can multiply without a calculator. This article might be helpful: https://www.wikihow.com/Do-Long-Multiplication

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Question

What is the speed of a car in meters per second if it is going at a speed of 75mph?

Danoyachtcapt

Top Answerer

1 mph = 0.44704 m/s 75mph = 33.53m/s

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Question

If you win an 800m race in 1 min 45 secs, what would the average speed be in km per hour?

Cabbache

Community Answer

It's the same thing as winning a 0.8km race in 7/240 hours, so it would be (240/7)x0.8 km/h = 27.43km/h.

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Question

A golf ball travels 450 meters in 2 seconds, what is the rate in meters per second?

Cabbache

Community Answer

If in 2 seconds it travels 450 meters, then in 1 second it travels half as much, that is 225 meters.

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