Question

calculate the velocity of the car moving travelled a distance of 15 km in 20 minutes (change the km in to meters and minutes in to seconds​

Answer 1

• Explanation:
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.The fundamental way to solve this type of question is to do unit conversion. The velocity (or speed) of the car is 15km/20minutes15km/20minutes. Since the unit of time is in minute instead of hour, we need to change it.
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.The fundamental way to solve this type of question is to do unit conversion. The velocity (or speed) of the car is 15km/20minutes15km/20minutes. Since the unit of time is in minute instead of hour, we need to change it.In order to change it, we need to multiply 15km/20minutes15km/20minutes by 60minutes/1hour60minutes/1hour so the result is 45km/1hour45km/1hour which normally pronounced as km per hour.
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.The fundamental way to solve this type of question is to do unit conversion. The velocity (or speed) of the car is 15km/20minutes15km/20minutes. Since the unit of time is in minute instead of hour, we need to change it.In order to change it, we need to multiply 15km/20minutes15km/20minutes by 60minutes/1hour60minutes/1hour so the result is 45km/1hour45km/1hour which normally pronounced as km per hour.I’ll do another example for you but this time, the initial velocity is given in meter per second. Let say a bike is travelling at 2 meter per second and we are looking for its velocity in km/h.
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.The fundamental way to solve this type of question is to do unit conversion. The velocity (or speed) of the car is 15km/20minutes15km/20minutes. Since the unit of time is in minute instead of hour, we need to change it.In order to change it, we need to multiply 15km/20minutes15km/20minutes by 60minutes/1hour60minutes/1hour so the result is 45km/1hour45km/1hour which normally pronounced as km per hour.I’ll do another example for you but this time, the initial velocity is given in meter per second. Let say a bike is travelling at 2 meter per second and we are looking for its velocity in km/h.First, you need to know the conversion ratio which is 1 km = 1000 meter (kilo means 10^3) and 1 hour is 3600 seconds (60 seconds*60 minutes = 3600 seconds).
• Explanation:The easiest way is to multiply 15 km by 3 because 20 minutes is a fraction of 1/3 from an hour which give an answer of 45km/h.The fundamental way to solve this type of question is to do unit conversion. The velocity (or speed) of the car is 15km/20minutes15km/20minutes. Since the unit of time is in minute instead of hour, we need to change it.In order to change it, we need to multiply 15km/20minutes15km/20minutes by 60minutes/1hour60minutes/1hour so the result is 45km/1hour45km/1hour which normally pronounced as km per hour.I’ll do another example for you but this time, the initial velocity is given in meter per second. Let say a bike is travelling at 2 meter per second and we are looking for its velocity in km/h.First, you need to know the conversion ratio which is 1 km = 1000 meter (kilo means 10^3) and 1 hour is 3600 seconds (60 seconds*60 minutes = 3600 seconds).Now, write down the initial speed with unit which is 2meter/1second2meter/1second and multiply it with the conversion ratio. In this case, 2meter/1second2meter/1second times 1km/1000meter1km/1000meter times 3600second/1hour3600second/1hour and the answer will be 7.2 km/h . This looks hard in linear form but it will look easier in stacked form because it is easier to see the unit cancel out each other.

The calculation is above and the rest is explanation.

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