General Question Kinematics Units

In summary, when dealing with kinematic problems, it is not incorrect to have units such as km, miles, and minutes in the answer. However, for standardization, it is recommended to convert the units to meters and seconds before using any kinematic formulas. After obtaining the answer, it can be converted back to any desired units.
  • #1
Power of One
23
0
Sorry for asking this dumb question.

The units for displacement is m. The units for velocity is m/s. The units for acceleration is m/s^2.

When dealing with kinematic problems would it be incorrect to have units such as km, miles, and minutes in the answer? Should they be converted to meters and seconds to be technically correct?
 
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  • #2
You could say to be correct by standard (since the metric system is the closest to being the standard system). But there isn't a problem with converting units (just be careful to convert the units properly).
 
  • #3
Power of One said:
When dealing with kinematic problems would it be incorrect to have units such as km, miles, and minutes in the answer?
Not at all. Those are perfectly legitimate units for distance or time. Of course, usually they'll expect you to give the answer in standard units, but not always.
Should they be converted to meters and seconds to be technically correct?
Before using any kinematic formulas, you would be wise to convert all quantities to standard units such as meters and seconds. Once you get your answer you can convert it into any units you like.
 

What is kinematics and why is it important in science?

Kinematics is the branch of physics that studies the motion of objects without considering the forces that cause the motion. It is important in science because it helps us understand and describe the motion of objects in a systematic and precise way, allowing us to make predictions and analyze real-world situations.

What are the basic units used in kinematics?

The basic units used in kinematics are distance (meters), time (seconds), and mass (kilograms). These units are used to measure and describe the position, velocity, and acceleration of objects.

How is kinematics different from dynamics?

Kinematics and dynamics are both branches of physics that study the motion of objects, but they differ in their approach. Kinematics focuses on describing the motion of objects without considering the forces that cause the motion, while dynamics takes into account the forces and how they affect the motion of objects.

What is the difference between speed and velocity?

Speed is a measure of how fast an object is moving, while velocity is a measure of the speed and direction of an object's motion. In other words, speed is a scalar quantity (magnitude only) while velocity is a vector quantity (magnitude and direction).

How do you calculate acceleration?

Acceleration is the rate of change of an object's velocity over time. It is calculated by dividing the change in velocity by the change in time. The formula for acceleration is:

acceleration = (change in velocity) / (change in time) = (final velocity - initial velocity) / (final time - initial time)

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